Upper Devonian marine-nonmarine transition, southern Pennsylvania,
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Author / Creator: | Walker, Roger G |
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Imprint: | Harrisburg [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey] 1972. |
Description: | vi, 25 p. illus. 23 cm. |
Language: | English |
Series: | General geology report G62 |
Subject: | |
Format: | Print Book |
URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/104510 |
Notes: | Part of illustrative matter in pocket. "Pennsylvania Geological Survey fourth series." Bibliography: p. 25. |
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