TY - RPRT TI - Geologic map of the Clarksville South and Tungsten 7.5-minute quadrangles, Virginia and North Carolina AU - J. D. Peper AU - T. W. Clark AU - K. A. Kanahele PY - 1995 DO - 10.3133/ofr94629 UR - https://pubs.usgs.gov/publication/ofr94629 ID - ofr94629 ER -