National Geologic Map Database
General Information
- Title: Physiographic diagrams of Mount St. Helens, Washington showing changes in its summit crater, 1984
- Author(s): Alpha, T.R., and Myers, Bobbie
- Publishing Organization: U.S. Geological Survey
- Series and Number: Miscellaneous Field Studies Map MF-1906
- Publication Date: 1986
- Map Scale: 1:24,000
- Cross Section: None
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