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The serphoid and chalcidoid parasites of the hessian fly
- Gahan, A. B.
- Miscellaneous publication / United States Department of Agriculture 1933
- Hessian flies -- Parasites, Host-parasite relationships, Parasitic insects -- United States -- Classification, parasitoids, biological control agents, host-parasite relationships, natural enemies, grain crops, insect pests, plant pests, and Diptera
- 148 p. : ill. ; 23 cm.
- U.S. Dept. of Agriculture
- Organic Roots Collection