Geologic map of the Washington West 30’ × 60’ quadrangle, Maryland, Virginia, and Washington D.C
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| Description | article |
| Author/s |
author: J. Wright Horton Jr. John N. Aleinikoff David S. Powars Robert E. Weems |
| Publication date | 2017 |
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| Wikipedia link | |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |