Government chemists rival nature in making potent insect killers
Series: Picture story -- no. 63; Picture story (United States. Department of Agriculture) -- no. 63.
Publisher: U.S. Dept. of Agriculture, Office of Information, Press Service
Published: 1949
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Insecticides
Notes: Caption title.

"May 1, 1949."