TY - RPRT TI - Map showing anomalous lead distribution in stream sediment concentrates, Hillsboro and San Lorenzo quadrangles, exclusive of the Black Range Primitive Area, Sierra and Grant counties, New Mexico AU - K. C. Watts AU - H. V. Alminas AU - J. M. Nishi AU - W.C. Crim PY - 1978 DO - 10.3133/mf900j UR - https://pubs.usgs.gov/publication/mf900J ID - mf900J ER -