The work of the Division of Insecticide Investigations, 1927-1939.
APA Citation
United States. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations. (1940). The work of the Division of Insecticide Investigations, 1927-1939. Washington, D.C.: U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, Division of Insecticide Investigations.
MLA Citation
United States. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations. The Work of the Division of Insecticide Investigations, 1927-1939. Washington, D.C.: U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, Division of Insecticide Investigations, 1940.
Warning: These citations may not always be complete (especially for serials).