An assessment of coal resources available for development [electronic resource] : central Appalachian region, first year summary / by M. Devereux Carter and Nancy K. Gardner ; in cooperation with Kentucky Geological Survey, Virginia Division of Mineral Resources, West Virginia Geological and Economic Survey.
Imprint
Denver, Colo. : Dept. of the Interior, U.S. Geological Survey : Books and Open-File Reports Section [distributor], 1989.