Tentative correlation of the named geologic units of Iowa.

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Bibliographic Details
Author / Creator:Wilmarth, M. Grace (Mary Grace), 1866-1949.
Imprint:[Washington] : U.S. Geological Survey, 1930.
Description:2 charts ; 54 x 68 cm.
Language:English
Subject:
Format: Map U.S. Federal Government Document Print
URL for this record:http://pi.lib.uchicago.edu/1001/cat/bib/3873546
Hidden Bibliographic Details
Other authors / contributors:Geological Survey (U.S.)

MARC

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