The corn root aphid and methods of controlling it /

Bibliographic Details
Main Author:	Davis, John J. (John June), 1885-1965
Other Authors:	Packard, C. M. (Clyde Monroe)
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. Dept. of Agriculture, 1949.
Edition:	Rev. May 1949.
Series:	Farmers' bulletin (United States. Department of Agriculture) ; no. 891.
Subjects:	Corn root-aphis > Control. Corn > Diseases and pests.

Description
Item Description:	Originally issued Dec. 1917. "This revision was prepared by C.M. Packard."
Physical Description:	7 pages : illustrations ; 23 cm.