How to detect outbreaks of insects and save the grain crops
By: W.R. Walton
Series: Farmers' bulletin / United States Department of Agriculture -- no. 835; Farmers' bulletin (United States. Department of Agriculture) -- no. 835
Publisher: U.S. Department of Agriculture
Published: 1917
Place of publication: Washington, D.C
Language: eng
Number of pages: 24
Subjects: Grain; Diseases and pests
Notes: Cover title.

"Contribution from the Bureau of Entomology."

Includes bibliographical references.