The ancient volcanic rocks of South mountain, Pennsylvania /

Bibliographic Details
Main Author: Bascom, F. (Florence), 1862-1945 (Author)
Format: Government Document eBook
Language:English
Published: Washington, D.C. : Department of the Interior, United States Geological Survey, 1896.
Series:Bulletin of the United States Geological Survey ; no. 136.
Subjects:
Online Access:https://purl.fdlp.gov/GPO/gpo58503

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