A history of the gypsy moth infestation in Pennsylvania--1932-1949
- Year:
- 1950
- Subject:
- Gypsy moth -- Control -- Pennsylvania
- Format:
- 1 online resource (11-A pages)
- Publisher:
- United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, cooperating with Pennsylvania Department of Agriculture
- Collection:
- USDA publications