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The green-bug or spring grain-aphis : how to prevent its periodical outbreaks
- Author:
- Walton, William Randolph
- Source:
- USDA
- Year:
- 1921
- Subject:
- Greenbug, Control, Grain, Diseases and pests, life history, parasitoids, grain crops, Lysiphlebus testaceipes, Schizaphis graminum, biological control agents, grains, and natural enemies
- Language:
- English
- Publisher:
- U.S. Dept. of Agriculture
- Series:
- Farmers' bulletin (United States. Department of Agriculture) ; no. 1217
- Collection:
- Organic Roots Collection
- Permanent URL:
- http://handle.nal.usda.gov/10113/33485
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