Structural Transect of the Central Appalachian Fold-and-Thrust Belt: Harpers Ferry, West Virginia to Cumberland, Maryland July 15, 1989; 1989, p1-21, 21p
Structural Transect of the Central Appalachian Fold-and-Thrust Belt: Harpers Ferry, West Virginia to Cumberland, Maryland July 15, 1989; 1989, pi-iii, 3p
Structural Transect of the Central Appalachian Fold-and-Thrust Belt: Harpers Ferry, West Virginia to Cumberland, Maryland July 15, 1989; 1989, p21-21, 1p