Vapor-heat treatment for the control of narcissus bulb pests in the Pacific Northwest
- Source:
- Technical bulletin (United States. Dept. of Agriculture) ; no. 672 1939
- Year:
- 1939
- Subject:
- Bulbs -- Northwestern States -- Diseases and pests and Daffodils -- Diseases and pests
- Format:
- 54 p. : ill. ; 23 cm.
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection