| Title: | A Geological Reconnaissance in Northern Idaho and Northwestern Montana |
| Author: | Calkins, Frank C., 1878-1974 |
| Contributor: | Macdonald, D. F. |
| Note: | with notes on the economic geology by Macdonald; USGS Bulletin #384; Washington: GPO, 1909 |
| Link: | page images at HathiTrust |
| Stable link here: | https://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp100521 |
| Subject: | Geology -- Idaho |
| Subject: | Geology -- Montana |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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