Petroleum geology of the Devonian and Mississippian black shale of eastern North AmericaJohn B. Roen, Roy Clark Kepferle · First published 1993Open the Tome
Ohio shale (Devonian), SDO-1 from Rowan County, KentuckyRoy Clark Kepferle · First published 1985Open the Tome
Lithologic and stratigraphic description of cores of organic-rich shale of Late Devonian and early Mississippian age in northeastern KentuckyRoy Clark Kepferle · First published 1982Open the Tome
Stratigraphy of the Chattanooga Shale (Upper Devonian and Lower Mississippian) in vicinity of Big Stone Gap, Wise County, VirginiaRoy Clark Kepferle · First published 1981Open the Tome
Stratigraphy, petrology, and depositional environment of the Kenwood Siltstone Member, Borden Formation (Mississippian), Kentucky and IndianaRoy Clark Kepferle · First published 1977Open the Tome
Geologic map of the Crestwood quadrangle, North-Central KentuckyRoy Clark Kepferle · First published 1976Open the Tome
Members of the Borden Formation (Mississippian) in north-central KentuckyRoy Clark Kepferle · First published 1971Open the Tome
Uranium in Sharon Springs member of Pierre shale, South Dakota and northeastern NebraskaRoy Clark Kepferle · First published 1959Open the Tome
Strippable lignite deposits, Slope and Bowman Counties, North DakotaRoy Clark Kepferle · First published 1955Open the Tome
Selected deposits of strippable coal in central Rosebud County, MontanaRoy Clark Kepferle · First published 1954Open the Tome
Geologic map of the Shepherdsville quadrangle, Bullitt County, KentuckyRoy Clark KepferleOpen the Tome
