Butterflies and Bt corn :
allowing science to guide decisions.

APA Citation

United States. Agricultural Research Service. (2002). Butterflies and Bt corn: allowing science to guide decisions. [Beltsville, Md.]: Agricultural Research Service, USDA.

MLA Citation

United States. Agricultural Research Service. Butterflies And Bt Corn: Allowing Science to Guide Decisions. [Beltsville, Md.]: Agricultural Research Service, USDA, 2002.

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