IPM and biological control of weeds :
June 1987-December 1989.

APA Citation

National Agricultural Library (U.S.). (1990). IPM and biological control of weeds: June 1987-December 1989. Beltsville, Md.: U.S. Dept. of Agriculture, National Agricultural Library.

MLA Citation

National Agricultural Library (U.S.). IPM And Biological Control of Weeds: June 1987-December 1989. Beltsville, Md.: U.S. Dept. of Agriculture, National Agricultural Library, 1990.

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