| Title: | Geological Survey open-file report |
| Alternate title: | Open-file report. |
| Alternate title: | USGS OFR- microfiche collection |
| Alternate title: | USGS-OFR- microform |
| Alternate title: | USGS open-file reports |
| Alternate title: | U.S. Geological Survey open-file report |
| Alternate title: | USGS open-file report |
| Alternate title: | U.S.G.S. O.F.R. |
| Alternate title: | USGS OFR |
| Author: | Geological Survey (U.S.) |
| Note: | U.S. Dept. of the Interior, Geological Survey., in the 20th century |
| 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: | Geology |
| Subject: | Geology -- Periodicals |
| Subject: | Periodicals |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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