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Temporary Immunity in Alfalfa Ordinarily Susceptible to Attack by the Pea Aphid


Author:
Emery, W.T.
Source:
USDA
Year:
1946
Format:
p. 33-43.
Language:
English
Collection:
USDA publications
Permanent URL:
http://handle.nal.usda.gov/10113/IND43970072