Topographic map of Mount St. Helens, Washington, showing changes between April 11 and May 16, 1980
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| Format: | Book |
| Language: | English |
| Published: |
Reston, Va. :
U.S. Geological Survey,
1982.
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| Series: | Miscellaneous investigations series (Geological Survey (U.S.)) ;
map I-1411. |
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