37. Practical animal husbandry Creator: Widmer, Jack. Collection: Core Historical Literature of Agriculture Publisher: Scribner's Sons, Publication Place: New York : Date: 1949 Format: Book
38. Keeping chickens in cages: a description of the outdoor individual cage system of poultry management as developed mainly in southern California. Creator: Hartman, Roland Clarence, 1906- Collection: Core Historical Literature of Agriculture Publisher: [s.n.], Publication Place: Redlands, Calif. : Date: 1950 Format: Book
39. Avian physiology Creator: Sturkie, Paul D. Collection: Core Historical Literature of Agriculture Publisher: Comstock Pub. Associates, Publication Place: Ithaca, N.Y. : Date: 1954 Format: Book