New insecticides to be tested reach record breaking numbers
Series: Picture story -- no. 33; Picture story (United States. Department of Agriculture) -- no. 33.
Publisher: U.S. Dept. of Agriculture, Office of Information, Press Service
Published: 1947
Place of publication: Washington, D.C
Language: eng
Subjects: Insecticides; Testing
Notes: Caption title.

"April 27, 1947."