The serphoid and chalcidoid parasites of the hessian fly
By: by A.B. Gahan
Series: Miscellaneous publication / United States Department of Agriculture -- no.       174
Publisher: U.S. Dept. of Agriculture
Published: 1933
Place of publication: Washington, D.C
Language: eng
Number of pages: 148
Subjects: Hessian flies; Parasites; Host-parasite relationships; Parasitic insects; Classification; Parasitoids; Biological control agents; Natural enemies; Grain crops; Insect pests; Plant pests; Diptera
Notes: Caption title.

"December, 1933."

Includes bibliographical references.