The grasshopper mite :
Eutronbidium trigonum (Hermann) : an inportant enemy of grasshoppers /
by H.C. Severin.
APA Citation
Severin, H. C. (Harry Charles)., South Dakota Agricultural Experiment Station. (1944). The grasshopper mite: Eutronbidium trigonum (Hermann) : an inportant enemy of grasshoppers. Brookings, S.D.: Agricultural Experiment Station, South Dakota State College.
MLA Citation
Severin, H. C. (Harry Charles), 1885-, and South Dakota Agricultural Experiment Station. The Grasshopper Mite: Eutronbidium Trigonum (Hermann) : an Inportant Enemy of Grasshoppers. Brookings, S.D.: Agricultural Experiment Station, South Dakota State College, 1944.
Warning: These citations may not always be complete (especially for serials).