Publisher Name: U.S. Department of Agriculture
Place of Publication: Washington, D.C.
Describes the characteristics of the green-bug, the damage it causes to crops, and methods of control.
Issued June 1921; reprinted with changes in 1939.
"Contribution from the Bureau of Entomology."
Includes bibliographical references (p. 11).
Listed in March 1939 Monthly Catalog, p. 289.
11 p. : ill. ; 23 cm.
|Keyword(s):||spring grain-aphis | grain pests | green-bugs | aphidius testaceipes | aphid | greenbug|
|Added Title:||Farmers' bulletin (United States. Dept. of Agriculture) ; no. 1217.|
|Alternate Title:||Green bug or spring grain aphis|
|Series Title:||Farmers' bulletin (United States. Dept. of Agriculture)|
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USDA Farmers' Bulletins