The serphoid and chalcidoid parasites of the hessian fly - Gahan, A. B. (Arthur Burton), (Washington, D.C, U.S. Dept. of Agriculture, 1933)
https://www.biodiversitylibrary.org/bibliography/65338
Keywords: AgSpace|bio-control agfents|biological control agents|Classification|Diptera|grain crops|grain pests|Hessian flies|Host-parasite relationships|Insect pests|Internet resource|natural enemies|Parasites|Parasitic insects|parasitoids|plant pests|United States