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Keys to the parasites of the Hessian fly based on remains left in the host puparium


Author:
Hill, C. C. and Pinckney, J. S.
Source:
Technical bulletin (United States. Dept. of Agriculture) ; no. 715 1940
Year:
1940
Subject:
Hessian flies and Parasitic insects
Format:
24 p., 5 leaves of plates : ill. ; 23 cm.
Publisher:
U.S. Dept. of Agriculture
Collection:
Organic Roots Collection