1. Pests. Review of United States patents relating to pest control, by R. C. Roark, v. 15, no. 4; Apr. 1942. Bookmark Corporate/Agency Authors: Entomology and Plant Quarantine Bureau, Animal Industry Bureau, and Agriculture Department Publisher: Entomology and Plant Quarantine Bureau Date: [1942.] SuDoc number: A 77.311:15/4