The file is referred to in 1 page
- Topographic Maps
https://serc.carleton.edu/NAGTWorkshops/careerdev/AcademicCareer2010/activities/40981.html
ProvenanceA New Perspective on Mount St. Helens—Dramatic Landform Change and Associated Hazards at the Most Active Volcano in the Cascade Range
By David W. Ramsey, Carolyn L. Driedger, and Steve P. Schilling, 2008
http://pubs.usgs.gov/sim/3008/ ReuseThis item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license
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USGS Poster - Mount St. Helens