On the fossil foot-marks in the red sandstone of Pottsville, Pennsylvania / by Isaac Lea
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| Description | Philadelphia: Printed for the author, 1852. |
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| Publication date | 1852 |
| Language | English |
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| Copyright status |
public domain in United States. public domain in countries with 100 years pma or shorter. |
| Missing/wrong data? | Edit Wikidata item |