Barkbeetle enemies of California forests.
Prepared by Bureau of entomology and plant quarantine, U.S. Department of agriculture, in cooperation with State emergency relief administration--Project 3F-2-302, and Emergency educational program.
APA Citation
United States. Bureau of Entomology and Plant Quarantine. (1935). Barkbeetle enemies of California forests. Berkeley, Cal..
MLA Citation
United States. Bureau of Entomology and Plant Quarantine. Barkbeetle Enemies of California Forests. Berkeley, Cal., 1935.
Warning: These citations may not always be complete (especially for serials).