Silurian conodonts from Wills Mountain anticline, Virginia, West Virginia, and Maryland
Charles T. Helfrich
Bok Engelsk 1975
| Utgitt | Boulder, Colo. : Geological Society of America , c1975
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|---|---|
| Omfang | 82 s. : ill. + mikrofilmkort i lomme
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| Emner | |
| Dewey | |
| ISBN | 081372161x. - 9780813721613
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