Three species of the genus Lygus and their relation to alfalfa seed production in southern Arizona and California
- Source:
- Technical bulletin (United States. Dept. of Agriculture) ; no. 741 1940
- Year:
- 1940
- Subject:
- Alfalfa -- Diseases and pests -- Arizona and Alfalfa -- Diseases and pests -- California
- Format:
- 19 p. : ill. ; 23 cm.
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection