The Hessian fly in California
By: by C.M. Packard.
Contributors: United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 81; Technical bulletin (United States. Dept. of Agriculture) -- no. 81.
Publisher: U.S. Dept. of Agriculture
Published: 1928
Place of publication: Washington
Language: eng
Number of pages: 26
Subjects: Hessian flies.; Wheat -- Diseases and pests.
Notes: Caption title.

Literature cited: p. 25.