The effectiveness of cultivation as a control for the corn earworm
- Source:
- Technical bulletin (United States. Dept. of Agriculture) ; no. 561 1937
- Year:
- 1937
- Subject:
- Heliothis zea -- Control
- Format:
- 16 p. : ill. ; 23 cm.
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection