Washington State wetlands rating system :
western Washington.
APA Citation
Washington (State). Department of Ecology. (1993). Washington State wetlands rating system: western Washington. 2nd ed. [Olympia, Wash.]: Washington State Dept. of Ecology.
MLA Citation
Washington (State). Department of Ecology. Washington State Wetlands Rating System: Western Washington. 2nd ed. [Olympia, Wash.]: Washington State Dept. of Ecology, 1993.
Warning: These citations may not always be complete (especially for serials).