Tentative correlation of the named geologic units of Pennsylvania.
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Author / Creator: | Wilmarth, M. Grace (Mary Grace), 1866-1949. |
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Imprint: | [Washington] : U.S. Geological Survey, 1928. |
Description: | 2 charts ; on sheets 56 x 66 cm. |
Language: | English |
Subject: | |
Format: | Map U.S. Federal Government Document Print |
URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/3873521 |
Regenstein, Room 370, Map Collection
Call Number: |
G3821.C57 1928 .W5
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