Geologic map of the national parks in the National Capital region, Washington, D.C., Virginia, Maryland, and West Virginia
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2015 ◽
Vol 6
(4)
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pp. 618-625
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2011 ◽
Vol 15
(2)
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pp. 59
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2022 ◽
Vol 11
(11)
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pp. 1
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2021 ◽
Vol 14
(2)
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pp. 822-826