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Pennsylvania quarantine on account of the gypsy moth and modifications (also memorandum of agreement)


Author:
United States. Bureau of Entomology and Plant Quarantine
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