Beneficial predators and parasites found on Washington crops
By: [by Carl Johansen, Jack Eves, Arthur Retan].
Contributors: Eves, J. D.; Burgett, M.; Washington State University. Cooperative Extension Service.; United States. Dept. of Agriculture.
Edition: [Rev.].
Series: Extension bulletin -- 640.; Extension bulletin (Washington State University. Cooperative Extension Service) -- 640.
Publisher: Cooperative Extension Service, College of Agriculture, Washington State University
Published: 1975
Place of publication: Pullman, Wash
Language: eng
Number of pages: 12
Subjects: Beneficial insects -- Washington (State); Predatory insects -- Washington (State); Parasitic insects -- Washington (State)
Notes: Cover title.

"Issued July 1972, slightly revised June 1975"--P. [2].