The grasshopper problem and alfalfa culture
- Source:
- Farmers' bulletin (United States. Dept. of Agriculture) ; no. 637 1915
- Year:
- 1915
- Subject:
- insect pests, natural enemies, cultural control, baits, poisoning of animal pests, pests, trapping, and physical control
- Format:
- 10 p. : ill. --
- Language:
- English
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection