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Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 13 (1906) > Annual Issue

 

Document Type

Research

Abstract

Several years ago while studying the coal measures of Iowa and the neighboring states, it was suggested in a general way that the so-called Lower Coal Measures and the so-called Upper Coal Measures eventually might prove to be essentially contemporaneous.

Publication Date

1906

Journal Title

Proceedings of the Iowa Academy of Science

Volume

13

Issue

1

First Page

199

Last Page

201

Copyright

©1906 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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