21. Dairy science: its principles and practice in production, management and processing Creator: Petersen, William Earl, 1892- Collection: Core Historical Literature of Agriculture Publisher: J.B. Lippincott Co., Publication Place: Chicago : Date: 1939 Format: Book
22. Dairy profit Creator: Fraser, Wilber John, 1869-1949. Collection: Core Historical Literature of Agriculture Publisher: Interstate, Publication Place: Danville, Ill. : Date: 1940 Format: Book
23. The market-milk industry Creator: Roadhouse, Chester Linwood, b. 1881. Collection: Core Historical Literature of Agriculture Publisher: McGraw-Hill Book Company, Inc., Publication Place: London : Date: 1941 Format: Book
24. Dairy engineering Creator: Farrall, Arthur William, 1899- Collection: Core Historical Literature of Agriculture Publisher: Chapman & Hall, Limited, Publication Place: London : Date: 1942 Format: Book
25. Interregional competition in agriculture: with special reference to dairy farming in the Lake States and New England Creator: Mighell, Ronald L. 1902- Collection: Core Historical Literature of Agriculture Publisher: Harvard University Press, Publication Place: Cambridge, Mass. : Date: 1951 Format: Book