Mount St. Helens volcanic-ash fall in the Bull Run watershed, Oregon, March-June 1980 /

Bibliographic Details
Main Author:	Shulters, M. V., 1950-
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Clifton, Daphne G.
Format:	Government Document Book
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, Geological Survey ; 1980.
Series:	Geological Survey circular ; 850-A.
Subjects:	Volcanic ash, tuff, etc. > Oregon. Saint Helens, Mount (Wash.) > Eruption, 1980. Bull Run River Watershed (Or.)

by Shulters, M. V., 1950-, Clifton, Daphne G.
Published 1980

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