25. Entomophagous insects Creator: Clausen, Curtis P. 1893- Collection: Core Historical Literature of Agriculture Publisher: McGraw-Hill, Publication Place: London : Date: 1940 Format: Book
26. Insect transmission of plant diseases Creator: Leach, Julian Gilbert, 1894- Collection: Core Historical Literature of Agriculture Publisher: McGraw-Hill book company, inc., Publication Place: London : Date: 1940 Format: Book
27. Insect pests of stored grain and grain products, identification, habits and methods of control Creator: Cotton, R. T. Collection: Core Historical Literature of Agriculture Publisher: Burgess Publishing Company, Publication Place: Minneapolis, Minn. : Date: 1941 Format: Book