Geometry and Deformation Fabrics in the Central and Southern Appalachian Valley and Ridge and Blue Ridge Frederick, Maryland to Allatoona Dam, Georgia, July 20 - 27 1989 - Woodward, Nicholas B.; Wojtal, Steven; Dunne, William M.; Mitra, Gautam; Simpson, Carol; Evans, Mark; Costello, John (Field Trip Guidebooks Ser.)