Pennsylvania quarantine on account of the gypsy moth and modifications (also memorandum of agreement)
- Year:
- 1940
- Subject:
- Gypsy moth -- Control -- Pennsylvania
- Format:
- 1 online resource (178 pages in various pagings) : maps
- Publisher:
- United States Department of Agriculture, Bureau of Entomology and Plant Quarantine
- Collection:
- USDA publications