Simulation models, GIS and nonpoint-source pollution :
January 1988 - June 1992 /
David Holloway and Joe Makuch.

APA Citation

Holloway, D., Makuch, J., National Agricultural Library (U.S.). (1992). Simulation models, GIS and nonpoint-source pollution: January 1988 - June 1992. Beltsville, Md.: National Agricultural Library.

MLA Citation

Holloway, David, Joe Makuch, and National Agricultural Library (U.S.). Simulation Models, GIS And Nonpoint-source Pollution: January 1988 - June 1992. Beltsville, Md.: National Agricultural Library, 1992.

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