Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Evaluation Of Milk Laboratories
Download Evaluation Of Milk Laboratories full books in PDF, epub, and Kindle. Read online Evaluation Of Milk Laboratories ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Evaluation of Milk Laboratories by : United States. Food and Drug Administration
Download or read book Evaluation of Milk Laboratories written by United States. Food and Drug Administration and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Public Health Service. Division of Environmental Engineering and Food Protection Publisher : ISBN 13 : Total Pages :100 pages Book Rating :4.:/5 (89 download)
Book Synopsis Evaluation of Milk Laboratories Recommended by the United States Public Health Service by : United States. Public Health Service. Division of Environmental Engineering and Food Protection
Download or read book Evaluation of Milk Laboratories Recommended by the United States Public Health Service written by United States. Public Health Service. Division of Environmental Engineering and Food Protection and published by . This book was released on 1965 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Milk Laboratories Approved by Federal and State Agencies in Accordance with the Public Health Service Grade "A" Pasteurized Milk Ordinance and Evaluation of Milk Laboratories by : United States. Public Health Service
Download or read book Milk Laboratories Approved by Federal and State Agencies in Accordance with the Public Health Service Grade "A" Pasteurized Milk Ordinance and Evaluation of Milk Laboratories written by United States. Public Health Service and published by . This book was released on 1969 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Milk Laboratories Approved by Federal and State Agencies by : National Center for Urban and Industrial Health (U.S.)
Download or read book Milk Laboratories Approved by Federal and State Agencies written by National Center for Urban and Industrial Health (U.S.) and published by . This book was released on 1967 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Milk Laboratories by : United States. Food and Drug Administration
Download or read book Evaluation of Milk Laboratories written by United States. Food and Drug Administration and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Milk Laboratories by : Etats-Unis. Public Health Service
Download or read book Evaluation of Milk Laboratories written by Etats-Unis. Public Health Service and published by . This book was released on 1965 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Milk Laboratories by : United States. Food and Drug Administration
Download or read book Evaluation of Milk Laboratories written by United States. Food and Drug Administration and published by . This book was released on 2015 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Milk Laboratories Approved by Federal and State Agencies in Accordance with the Public Health Service Grade "A" Pasteurized Milk Ordinance and Evaluation of Milk Laboratories by :
Download or read book Milk Laboratories Approved by Federal and State Agencies in Accordance with the Public Health Service Grade "A" Pasteurized Milk Ordinance and Evaluation of Milk Laboratories written by and published by . This book was released on 1969 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States Department of Health, Education, and Welfare. Public Health Service Publisher : ISBN 13 : Total Pages : pages Book Rating :4.:/5 (643 download)
Book Synopsis Evaluation of Milk Laboratories by : United States Department of Health, Education, and Welfare. Public Health Service
Download or read book Evaluation of Milk Laboratories written by United States Department of Health, Education, and Welfare. Public Health Service and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Milk Laboratories Approved by Federal and State Agencies in Accordance with the Public Health Service Grade "A" Pasteurized Milk Ordinance and Evaluation of Milk Laboratories by : United States. Public Health Service
Download or read book Milk Laboratories Approved by Federal and State Agencies in Accordance with the Public Health Service Grade "A" Pasteurized Milk Ordinance and Evaluation of Milk Laboratories written by United States. Public Health Service and published by . This book was released on 1969 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Consumer Protection and Environmental Health Service. Environmental Control Administration Publisher : ISBN 13 : Total Pages :56 pages Book Rating :4.:/5 ( download)
Book Synopsis Milk Laboratories Approved by Federal and State Agencies by : United States. Consumer Protection and Environmental Health Service. Environmental Control Administration
Download or read book Milk Laboratories Approved by Federal and State Agencies written by United States. Consumer Protection and Environmental Health Service. Environmental Control Administration and published by . This book was released on 1969 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States Department of Health, Education, and Welfare. Public Health Service Publisher : ISBN 13 : Total Pages :44 pages Book Rating :4.:/5 (782 download)
Book Synopsis Milk Laboratories Approved by Federal and State Agencies by : United States Department of Health, Education, and Welfare. Public Health Service
Download or read book Milk Laboratories Approved by Federal and State Agencies written by United States Department of Health, Education, and Welfare. Public Health Service and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Milk and Its Products by : Milk Industry Foundation
Download or read book Analysis of Milk and Its Products written by Milk Industry Foundation and published by Daya Books. This book was released on 2005 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Is The Second Edition Of A Manual That Has Achieved A Distinguished Place In The Dairy Industry And Has Rendered A Service To The Industry Throughout The World. The General Form Of Presentation Of The Text Has Been Retained But The Material Has Been Rearranged Under A Greater Number Of Chapter Headings To Provide More Clarity And To Facilitate Ease In Locating The Various Topics When Using The Manual. A Consistent Effort Has Been Made To Cite The Best Available Reference Material For The Contents Of All Chapters. The Book Divided Into 7 Parts And 43 Chapters Along With Appendix. This Well Illustrated Book Will Satisfy Its Readers Requirements And Form A Valuable Book For All Those Concerned With Milk Industry And Utilisation Of Their Products. Contents Part I: Organization Of A Dairy Laboratory; Chapter 1: The Milk Control Laboratory, Routine Control Measures, Bacteriological Equipment, Babcock Equipment, Mojonnier Equipment; Chapter 2: Suggested Schedule Of Routine Laboratory Procedure, Receiving Stations And Milk Processing Plants, Creameries, Ice Cream Plants; Part Ii: Microbiological Control Of Dairy Products; Chapter 3: Agar Plate Counts, Introduction, American Public Health Association Standard Methods, Preparation Of Materials, Agar Plate Count, Gravimetric Samples For The Agar Plate Methods, Simplified Procedure For Making Bacteria Counts; Chapter 4: Agar Plate Counts On Special Products, Butter, Cheese, Cheese Spreads, Materials Of Pasty Consistency And Fruits, Condensed Milk, Cream, Evaporated Milk, Granulated Materials, Ice Cream, Powdered Materials; Chapter 5: Determination Of Special Types Of Organisms, Acidophilus, Brucella, Coliform Group, Pathogenic Streptococci, Protein Digesting Bacteria, Ropy Milk Organisms, Sporogenes Test, Thermoduric And Thermophilic Bacteria; Chapter 6: Determination Of Sanitization Of Utensils And Equipment, Bacterial Counts Of Containers, Tests For Sanitary Condition Of Equipment; Chapter 7: Direct Microscopic Examination Of Dairy Products, Market Milk, Other Dairy Products; Chapter 8: Detection Of Mastitis, Black Cloth Or Strip Cup Test, Bromthymol Blue Test (Thybromol Test) Catalase Test, Field Test For Chlorides, Quantitative Test For Chlorides, Direct Microscopic Test, Hotis Test, Whiteside Test; Chapter 9: Reduction Tests, Methylene Blue Test, Modification Of The Methylene Blue Technic, Resazurin Test; Chapter 10: Special Culture Propagation, Propagation Of Butter Cultures In The Bacteriological Laboratory, Starter Making; Chapter 11: Determination Of Yeasts And Molds, Determination In Butter, Parson S Method For Visual Demonstration Of Mold In Cream, Widlman Method Of Detecting Mold In Butter, Mold Mycelia In Butter, Practical Determination Of The Keeping Quality Of Butter, Determination Of Yeasts And Mold In Soft Cheeses, Microbial Control Of Parchment Wrappers And Liners. Part Iii: Chemical Control Methods For Dairy Products; Chapter 12: Collection And Care Of Samples, Milk And Cream, Composite Milk Samples, Ice Cream Mix And Ice Cream, Butter, Cheese, Dry Milk, Evaporated Milk, Condensed Milk; Chapter 13: Babcock Test For Fat, Babcock Test For Fat In Milk, Babcock Test For Fat In Homogenized Milk, Modified Babcock Test For Fat In Homogenized Milk, Babcock Test For Fat In Cream, Tests For Fat In Skim Milk Or Buttermilk, Pennsylvania Test For Fat In Chocolate Milk Or Drink, Modified Babcock Tests For Milk Fat In Ice Cream And Ice Cream Mix, Modified Pennsylvania Test For Fat In Ice Cream And Ice Cream Mix (Borden), Calibration Of Babcock Glassware; Chapter 14: Roese-Gottlieb Fat Determination, Mojonnier Tester, Milk, Skim Milk, Buttermilk And Whey, Cream, Ice Cream, Evaporated Milk, Condensed Buttermilk And Unsweetened Condensed Milk, Sweetened Condensed Milk, Butter, Cheese, Malted Milk, Chocolate, And Cocoa, Dry Skim Milk, Buttermilk Powder, And Whole Milk Powder, Causes For High And Low Fat Tests, Liquid Eggs, Frozen Eggs And Dried Eggs; Chapter 15: Gerber Test For Fat, Milk, Plain Or Homogenized, Skim Milk And Buttermilk, Chocolate Milk And Chocolate Drink, Cream, Ice Cream And Ice Cream Mix; Chapter 16: Mojonnier Determination Of Total Solids, Milk, Skim Milk, Buttermilk And Whey, Cream, Ice Cream, Unsweetened Condensed Milk And Condensed Buttermilk, Sweetened Condensed Milk, Butter, Cheese, Soft Cheeses, Malted Milk, Chocolate And Cocoa, Dry Milk Powder, Whole Milk Powder And Buttermilk Powder, Egg Yolk, Gelatin, Causes For High And Low Total Solids Tests; Chapter 17: Total Solids Determination Without Mojonnier Equipment, Milk, Skim Milk, Buttermilk And Whey, Dried Milk, Cheese; Chapter 18: Moisture, Salt, And Fat Determination In Butter And Cheese, Butter, Cheese; Chapter 19: Titratable Acidity, Milk And Cream, Skim Milk And Buttermilk, Ice Cream And Ice Cream Mix, Sherberts And Ices, Condensed Milk, Dry Whole Milk, Non-Fat Dry Milk Solids, Sour Or Ripened Cream And Starter, Butter, Cream Cheese; Chapter 20: Hydrogen Ion Determination, Theory, Colorimetric Method Of Ph Measurements, Potentiometric Method Of Measuring Ph, Oxidation-Reduction Potential Measurements; Chapter 21: Phosphatase Test For Pasteurization Control, Gilcreas Method, Scharer Methods, General Precautions In Interpreting Phosphatase Tests, Sanders And Sager Method; Chapter 22: Neutralizer Detection, Hankinson And Anderson Method, Ph Method. Part Iv: Physical Control Methods For Dairy Products; Chapter 23: Specific Gravity Determination Of Milk, Lactometer Method (Conventional), Lactometer Method (Sharp And Hart Modification), The Westphal Balance, Detecting Adulterated Milk Watering, Skimming; Chapter 24: Determination Of Added Water, Cryoscopic Method, Acetic Serum Method, Sour Serum Method, Copper Serum Method; Chapter 25: Sediment Tests, Milk As Received From Farm, Milk After Processing (In Final Consumer Package), Fresh Fluid Cream (In Final Consumer Package), Sweet Cream (As Received), Dry Whole Milk, Non-Fat Dry Milk Solids, Sweetened Condensed Milk, Plain Or Superheated Condensed Milk, Sour Cream (American Butter Institute Methods), Butter (American Butter Institute Method), Butter (Borax Method), Ice Cream And Ice Cream Mix, Cheese, Sugar, Salt, Stabilizers; Chapter 26: Cream Volume Determination, Milk Industry Foundation Method, Milk Bottle Gage Method, Plant Method, Burette Method; Chapter 27: Curd Tension Determination, American Dairy Science Association Method; Chapter 28: Viscosity Determination Of Dairy Products, Borden Method For Cream, Babcock Method, Saybolt Viscosimeter Method, Pipette Method, Falling Ball Method For Sweetened Condensed Milk; Chapter 29: Homogenization Efficiency Determination, Determination Of The Usphs Index Of Homogenized Milk, Microscopic Method. Part V: Miscellaneous And Special Tests Of Dairy Products, Chapter 30: Miscellaneous Tests, Brom Thymol Blue Test, Chloride Test, Blood In Milk, Alcohol Test For Determining Coagulability Of Milk, Catalase Test For Butter, Detection Of Coloring Matter, Copper Determination In Milk, Diacetyl And Acetylmethylcarbinal (Acetoin) Determination In Butter And Butter Starters, Differential Of Oleomargarine, Butter And Renovated Butter, Egg Yolk Determination In Dairy Products, Gelatin Detection In Dairy Products, Heated Milk (Over 172 F) Detection, Lactic Acid Determination In Milk, Oiling Off Test For Cream, Preservative Detection, Solubility Index Of Dry Whole Milk, Solubility Index Of Non-Fat Dry Milk Solids, Stiffness And Stability Determination Of Whipped Cream, Sucrose And Lactose Simultaneous Determinations In Dairy Products, Vitamin C Determination In Dairy Products. Part Vi: Microbiological, Chemical, And Physical Tests For Non Dairy Products; Chapter 31: Chemical Control Procedures For Washing And Sterilizing Solutions And Brine, Total Hardness Of Water, Determination Of Strength Of Washing Solutions, Determination Of Strength Of Washing Powders, Phosphoric Acid Determination, Polyphosphate Determination In The Presence Of One Another, Alkyl Benzene Sulfonate Determination, Chlorine Solution Strength, Determination Of Strength Of Quaternary Ammonium Solutions, Testing Brines For Purity, Strength, And Corrosion Inhibitor; Chapter 32: Physical Tests Applied To Glass Milk Bottles, Discussion, Capacity Measurement, Annealing Test, Hydrostatic Internal Pressure Test, Thermal Shock Test, Impact Test; Chapter 33: Sugar Syrup Tests, Cane Sugar Syrup, Maple Syrup; Chapter 34: Gelatin Examination, Water Absorption Property, Rate Of Solution, Organoleptic Examination, Moisture Determination, Ash Determination, Ph Value Determination, Acidity Determination, Gel Strength Determination, Viscosity Determination; Chapter 35: Vanilla Flavor Tests, Specific Gravity, Alcohol Content, Gravimetric Test For Vanillin And Coumarin, Colorimetric Method For Vanillin, Mojonnier Method For Vanillin, Lead Number, Total Solids, Quality Of Vanilla Flavor; Chapter 36: Chocolate And Cocoa Testing, Moisture Test, Total Ash, Soluble And Insoluble Ash, Alkalinity Of Total Ash, Detection Of Alkali, Percentage Of Cocoa Butter, Test For Adulteration Of Cocoa With Shells, Fibers, Carbon, Foreign Starches And Dyes, Test For Fineness, Bacteriological Analysis Of Chocolate Products; Chapter 37: Fruit Tests, Canned Fruit Grades, Determination Of Drained Weight, Determination Of Syrup Concentration, Detection Of Chemical Preservatives, Determination Of Total Solids, Microscopic Examination For Bacteria, Yeasts, And Molds; Chapter 38: Tin Determinations, Determination Of Tin Thickness On Tin Plant Cans, Determination Of The Parosity Of Tin Coatings On Steel; Chapter 39: Biochemical Oxygen Demand Determination, Bod Test. Part Vii: Preparation Of Media And Reagents; Chapter 40: Culture Media, Hydrogen Ion Determination, Standard Nutrient Agar, Media For Hemolytic Streptococci, Media For The Determination Of Coliform Types, Lactose Broth, Potato Dextrose Agar, Tomato Juice Agar, Tributyrin Agar, Trypsin Digest Agar (Modified), Whey Agar, Yeast Dextrose Agar, Bacto Nutritive Caseinate Agar, Skim Milk Nutrient Agar, Burri Medium, Buttered Phosphate Stock Solution, Litmus Milk; Chapter 41: Stains, Acid Stain For Beed Smears, Differential Color Stain, Gram Stain, Loeffler S Modified Methylene Blue Stain, Modified Newman-Lampert Stain; Chapter 42: Standard Solutions, Preparation Of Standard Solutions, Hydrochloric Acid Solutions, Iodine Solution-Tenth Normal, Molybdate Solution (For Phosphorus Determination), Potassium Acid Phthalate Solution-Tenth Normal, Potassium Dichromate Solution-Tenth Normal, Potassium Permanaganate Solution-Tenth Normal, Silver Nitrate Solution-Tenth Normal, Silver Nitrate Solution, Sodium Chloride Solution-Tenth Normal, Sodium Hydroxide Solution, Sodium Oxalate Solution-Tenth Normal, Sodium Thiosulfate-Tenth Normal, Sulfuric Acid Solutions; Chapter 43: Indicators And Reagents, Indicators, Reagents. Appendix: Conversion Tables, Length, Area, Mass, Volume (Fluid Measures), Volume And Capacity (Dry Measures), Pressure, Energy, Avoirdupois Weights, Force, Metric Weights And Measures, Troy Weights, Apothecaries Weights, Avoirdupois Weight, Table For Computing Pounds Of Milk From Cases And Cans, Bae Equivalents, Comparisons Of Thermometer Scales, Baume Conversion Tables; Engineering; Definition Of Chemical Terms, International Atomic Weights 1941, Boiling Point Of Some Liquids At The Pressure Of The Atmosphere, Pearson Square Method For Standardizing Milk And Cream, Table For Correcting For Quevenne Lactometer Reading According To Temperature, Table For Determining Total Solids In Milk From Any Given Specific Gravity And Percentage Of Fat, Percentage Of Total Solids In Milk, Volume Of Ammonia Gas (Cubic Feet) That Must Be Pumped Per Minute To Produce 1 Ton Of Refrigeration In 24 Hours, Weight Of Ammonia Needed In A System, Temperature Of Saturated Steam At Varying Pressures, Logarithmic Table, Examination Of Plant Products, Daily Plant Operating Record; First Aid Suggestions; Antidotes Of Poisons; Ice Cream: Calculating The Mix, The Serum Point Method Of Proportioning Batches, Serum Point Method Simplified, The Balance Method Of Proportioning Ice Cream Mixes, Check-And-Balance Method Of Mix Proportioning, Simplifying The Pearson Square Method; Ice Cream: Freezing The Mix, Amount Of Water And Ice At Various Temperatures In Ice Cream Containing 12% Fat, 10% Serum Solids, And 14% Sugar, Calculations Of The Freezing Point Of Ice Cream Mixes, Freezing Point Lowering Of Cane Sugar Solutions, Overrum Table; Ice Cream Mix, Table Of Sugar (Common Sugar Or Milk Sugar) Solutions, Neutralizing Value Of Alkalis In Standardizing Acidity Of Cream Or Mixes, Solid Carbon Dioxide Required In Single Service Ice Cream Cartons, Winter Weather, Summer Weather; Legal Standards, Usphs Definitions, Federal Standards For Butter, Definitions And Standards Of Identity, Fill Of Container, Us Food And Drug Administration, Table Of Legal Standards For Milk Products By States; Properties Of Dairy And Related Products, Analysis Of Cow S Milk By Different Analysts, Average Chemical Composition Of More Than 5000 Analysis Of Milk At The New York State Agricultural Experiment Station, Geneva, Showing Ratio Of Solids Not Fat In Average Milk Of Different Breeds, Specific Heats Of Milk And Cream, Ratio Of Fats To Solids Not Fat In Milk Of Various Fat Percentages, Chlorides In Milk, Specific Heat Of Milk And Milk Derivatives, Acidity Of Fresh Cream, Water, Fat And Solids Not Fat Content Of Different Dairy Products Derived From A Certain Whole Milk, In Percentages, Approximate Weight Per Gallon Of Milk An Cream At Various Temperatures, Weight Of Milk Products According To Us Department Of Agriculture, Approximately, At A Temperature Of 68 F, Weights Per Gallon Of Fruits And Syrup, Average Composition And Weights Per Gallon Of Ingredients Used In Ice Cream Mix, Amounts Of Nutrients In A Pound Of Milk As Compared With A Pound Of Meat, Bread And Other Food Products, Amount Of Nutrient Materials In Various Dairy Products.
Book Synopsis The Laboratory Book of Dairy Analysis by : Henry Droop Richmond
Download or read book The Laboratory Book of Dairy Analysis written by Henry Droop Richmond and published by . This book was released on 1905 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Procedures Governing the Cooperative State-Public Health Service/Food and Drug Administration Program for Certification of Interstate Milk Shippers by : United States. Food and Drug Administration
Download or read book Procedures Governing the Cooperative State-Public Health Service/Food and Drug Administration Program for Certification of Interstate Milk Shippers written by United States. Food and Drug Administration and published by . This book was released on 1979 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dairy Processing and Quality Assurance by : Ramesh C. Chandan
Download or read book Dairy Processing and Quality Assurance written by Ramesh C. Chandan and published by John Wiley & Sons. This book was released on 2015-10-15 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dairy Processing and Quality Assurance, Second Edition describes the processing and manufacturing stages of market milk and major dairy products, from the receipt of raw materials to the packaging of the products, including the quality assurance aspects. The book begins with an overview of the dairy industry, dairy production and consumption trends. Next are discussions related to chemical, physical and functional properties of milk; microbiological considerations involved in milk processing; regulatory compliance; transportation to processing plants; and the ingredients used in manufacture of dairy products. The main section of the book is dedicated to processing and production of fluid milk products; cultured milk including yogurt; butter and spreads; cheese; evaporated and condensed milk; dry milks; whey and whey products; ice cream and frozen desserts; chilled dairy desserts; nutrition and health; sensory evaluation; new product development strategies; packaging systems; non-thermal preservation technologies; safety and quality management systems; and dairy laboratory analytical techniques. This fully revised and updated edition highlights the developments which have taken place in the dairy industry since 2008. The book notably includes: New regulatory developments The latest market trends New processing developments, particularly with regard to yogurt and cheese products Functional aspects of probiotics, prebiotics and synbiotics A new chapter on the sensory evaluation of dairy products Intended for professionals in the dairy industry, Dairy Processing and Quality Assurance, Second Edition, will also appeal to researchers, educators and students of dairy science for its contemporary information and experience-based applications.
Book Synopsis The Laboratory Book of Dairy Analysis (Classic Reprint) by : H. Droop Richmond
Download or read book The Laboratory Book of Dairy Analysis (Classic Reprint) written by H. Droop Richmond and published by Forgotten Books. This book was released on 2017-10-12 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Laboratory Book of Dairy Analysis This work is intended to contain working directions for the analysis of milk and dairy-products; the estimation of all constituents of diagnostic value is shortly de scribed in detail, and is in many cases illustrated by photographs of chemists actually carrying out the determination. A chapter on the application of analysis to the solu tion of problems usually placed before the chemist is included, and a very short summary of the composition of milk and its products is given. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.