TY - RPRT TI - Preliminary geologic map of the Valley Quadrangle, Clark County, Nevada AU - S.C. Lundstrom AU - W. R. Page AU - V.E. Langenheim AU - O.D. Young AU - S. A. Mahan AU - G. L. Dixon PY - 1998 DO - 10.3133/ofr98508 UR - https://pubs.usgs.gov/publication/ofr98508 ID - ofr98508 ER -