Mt. St. Helens eruption, Cowlitz County, Washington, Cowlitz and Toutle Rivers.
APA Citation
United States. Army. Corps of Engineers. Portland District. (1981). Mt. St. Helens eruption, Cowlitz County, Washington, Cowlitz and Toutle Rivers. [Portland, Or.]: U.S. Army Corps of Engineers, Portland District.
MLA Citation
United States. Army. Corps of Engineers. Portland District. Mt. St. Helens Eruption, Cowlitz County, Washington, Cowlitz And Toutle Rivers. [Portland, Or.]: U.S. Army Corps of Engineers, Portland District, 1981.
Warning: These citations may not always be complete (especially for serials).