TY - GEN A2 - Peper, John D. A2 - Clark, Timothy W. (Geologist) A2 - Kanahele, Kraig A. AU - Geological Survey (U.S.) CN - I 19.91:I-2471 CY - Reston, VA CY - Denver, CO LA - English PB - [The Survey, For sale by Information Services] PP - Reston, VA PP - Denver, CO PY - 1996 SN - 9780607860726 SN - 0607860723 TI - Geologic map of the Clarksville South and Tungsten 7.5-minute quadrangles, Virginia and North Carolina ER -