Digital geologic map and database of the Frederick 30 x 60 minute quadrangle, Maryland, Virginia, and West Virginia
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| Description | article |
| Author/s |
author: Scott Southworth Randall C. Orndorff David K. Brezinski |
| Publication date | 2002 |
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| Wikipedia link | |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |