TY - RPRT TI - Analyses of stream-sediment, stream-sediment-concentrate, and rock samples, Virgin Mountains Instant Study Area, Clark County, Nevada AU - Robert R. Carlson AU - E.F. Cooley PY - 1981 DO - 10.3133/ofr81191 UR - https://pubs.usgs.gov/publication/ofr81191 ID - ofr81191 ER -