The green-bug or spring grain-aphis : how to prevent its periodical outbreaks / W.R. Walton.
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| Main Author: | |
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of Agriculture : U.S. G.P.O.,
1921.
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| Series: | Farmers' bulletin (United States. Department of Agriculture) ;
no. 1217. |
| Subjects: |
Table of Contents:
- Distribution
- Life history
- Natural enemies
- Control methods.