| Title: | Middle and Upper Devonian, text. |
| Author: | Maryland Geological Survey |
| Author: | Clark, William Bullock, 1860-1917 |
| Note: | The Johns Hopkins Press, 1913 |
| 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: | Devonian Geologic Period |
| Subject: | From 345 to 405 million years ago |
| Subject: | Geology |
| Subject: | Geology, Stratigraphic |
| Subject: | Geology, Stratigraphic -- Devonian |
| Subject: | Geology -- Maryland |
| Subject: | Maryland |
| Subject: | Paleontology |
| Subject: | Paleontology -- Devonian |
| Subject: | Paleontology -- Maryland |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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