Rules and regulations of Bureau of Entomology and Plant Quarantine ...
Effective June 1, 1938.
APA Citation
United States. Bureau of Entomology and Plant Quarantine. (1939). Rules and regulations of Bureau of Entomology and Plant Quarantine ..: Effective June 1, 1938. [Washington]: U.S. Govt. Print. Off..
MLA Citation
United States. Bureau of Entomology and Plant Quarantine. Rules And Regulations of Bureau of Entomology And Plant Quarantine ..: Effective June 1, 1938. [Washington]: U.S. Govt. Print. Off., 1939.
Warning: These citations may not always be complete (especially for serials).