Foreign plant quarantines in-service training series.

APA Citation

United States. Bureau of Entomology and Plant Quarantine. (1940). Foreign plant quarantines in-service training series. Washington: U.S. Govt. Print. Office.

MLA Citation

United States. Bureau of Entomology and Plant Quarantine. Foreign Plant Quarantines In-service Training Series. Washington: U.S. Govt. Print. Office, 1940.

Warning: These citations may not always be complete (especially for serials).