Structural and stratigraphic framework of the Giles County area, a part of the Appalachian Basin of Virginia and West Virginia / by Robert C. McDowell and Arthur P. Schultz. Late paleozoic depositional trends in the Central Appalachian Basin / by Kenneth J. Englund and Roger E. Thomas (U.S. Geological Survey bulletin ; 1839-E, F) (Evolution of sedimentary basins--Appalachian basin ; ch. E, F)
Structural and stratigraphic framework of the Giles County area, a part of the Appalachian Basin of Virginia and West Virginia / by Robert C. McDowell and Arthur P. Schultz. Late paleozoic depositional trends in the Central Appalachian Basin / by Kenneth J. Englund and Roger E. Thomas
(U.S. Geological Survey bulletin ; 1839-E, F) (Evolution of sedimentary basins--Appalachian basin ; ch. E, F)