U.S. flag

An official website of the United States government

NALDC

Main content area

Studies on Biological Races of the Hessian Fly


Author:
Cartwright, W.B. and Noble, W.B.
Source:
USDA
Year:
1947
Format:
p. 147-153.
Language:
English
Collection:
USDA publications
Permanent URL:
http://handle.nal.usda.gov/10113/IND43970118