Mount St. Helens ash fallout impact assessment report.
Contributors: United States. Soil Conservation Service.
Publisher: USDA-Soil Conservation Service
Published: 1980
Place of publication: Spokane, Wash
Language: eng
Number of pages: 81
Subjects: Soil conservation -- Northwest, Pacific.; Environmental impact analysis -- Northwest, Pacific.; Saint Helens, Mount (Wash.) -- Eruption, 1980.