1970. 2018-05-29T18:46:45Z. 2018-05-29T18:46:45Z. Cardwell, Dudley H. West Virginia Geological Survey. English. cartographic image. Public. West Virginia and West Virginia.
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1976. 2018-05-29T18:37:34Z. 2018-05-29T18:37:34Z. Cardwell, Dudley H., cartographer. West Virginia Geological Survey,Williams & Heintz Map Corporation. English. cartographic image. Public. West Virginia and West Virginia.