Irrigating efficiently :
January 1988 - February 1994 /
Joe Makuch and Bonnie Emmert.

APA Citation

Makuch, J., Emmert, B., National Agricultural Library (U.S.). (1994). Irrigating efficiently: January 1988 - February 1994. Beltsville, Md.: National Agricultural Library.

MLA Citation

Makuch, Joe, Bonnie Emmert, and National Agricultural Library (U.S.). Irrigating Efficiently: January 1988 - February 1994. Beltsville, Md.: National Agricultural Library, 1994.

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