Mount St. Helens volcanic-ash fall in the Bull Run Watershed, Oregon, March-June 1980
TITLE_DISPLAY:
Mount St. Helens volcanic-ash fall in the Bull Run Watershed, Oregon, March-June 1980
PERSONAL_AUTHOR:
PUBLICATION_INFO:
[Reston, Va.?] : U.S. Dept. of the Interior, Geological Survey ; Alexandria, Va. (604 South Pickett Street, Alexandria, Va. 22304) : Free on application to Branch of Distribution, U.S. Geological Survey, 1980.
FORMAT:
Libros
SERIES:
Geological Survey circular ; 850-A
PHYSICAL_DESC:
v, A15 p. : ill., maps ; 26 cm.
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