The Ancient Volcanic Rocks of South Mountain, Pennsylvania
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| Description | book published in 1896, part of the series U.S. Geological Survey Bulletin; no. 136 |
| Author/s |
author: Florence Bascom |
| Publication date | 1896 |
| Language | English |
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| Access work | |
| Copyright status |
public domain in United States. public domain in countries with 70 years pma or shorter. |
| Missing/wrong data? | Edit Wikidata item |