The oyster-shell scale and the scurfy scale
- Source:
- Farmers' bulletin (United States. Department of Agriculture) ; no. 723 1916
- Year:
- 1916
- Subject:
- fruit trees, orchards, sulfur, street trees, shade trees, shrubs, scale insects, horticultural oils, insecticidal soaps, plant pests, spraying, ornamental trees, life cycle (organisms), Oyster-shell scale, and Scurfy scale
- Language:
- English
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection