The Helderberg Group and the position of the Silurian-Devonian boundary in North America /
Saved in:
Main Author: | Berdan, Jean Milton (Author) |
---|---|
Format: | Government Document Electronic eBook |
Language: | English |
Published: |
Washington, D.C. :
United States Department of the Interior, Geological Survey,
1964.
|
Series: | Geological Survey bulletin ;
1180-B. |
Subjects: | |
Online Access: | CONNECT |
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