The bollworm or corn earworm
By: F.C. Bishopp
Series: Farmers' bulletin / United States Department of Agriculture -- no. 872; Farmers' bulletin (United States. Department of Agriculture) -- no. 872
Publisher: U.S. Dept. of Agriculture
Published: 1917
Place of publication: Washington, D.C
Language: eng
Number of pages: 16
Subjects: Helicoverpa armigera; Control
Notes: Cover title.

"Contribution from the Bureau of Entomology."

Bibliography: p. 16.

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