| Title: | Preliminary report on the geological survey of exploration trench systems in the Michigan copper country for the Michigan Geological Survey |
| Author: | Michigan. Geological Survey Division |
| Author: | Lamey, Carl A. (Carl Arthur), 1892- |
| Author: | Seaman, Wyllys Arthur, 1886- |
| Note: | Houghton, Mich [1935], 1935 |
| Link: | page images at HathiTrust |
| No stable link: | This is an uncurated book entry from our extended bookshelves, readable online now but without a stable link here. You should not bookmark this page, but you can request that we add this book to our curated collection, which has stable links. |
| Subject: | Copper mines and mining -- Michigan |
| Subject: | Geology -- Michigan -- Houghton County |
| Subject: | Geology -- Michigan -- Keweenaw County |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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