Some linguloid shells from the late devonian and early carboniferous rocks of Pennsylvania and Ohio
By: by George H. Girty.
Contributors: Geological Survey (U.S.)
Series: U.S. Geological Survey professional paper -- 193-C; Shorter contributions to general geology
Publisher: U.S. Government Printing Office
Published: 1939
Place of publication: Washington, DC
Language: eng
Number of pages: 67
Notes: Also available in microfiches kept on 2d floor of library.

Bibliogr.

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