The file is referred to in 2 pages
- Sacagawea
https://serc.carleton.edu/research_education/trail_guides/sacagawea.html - Stratigraphy
https://serc.carleton.edu/research_education/mt_geoheritage/sites/augusta_choteau/stratigraphy.html
Provenance
Dave Mogk, Montana State University-Bozeman
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