TY - RPRT TI - Borehole gravity surveys in native-sulfur deposits, Culberson and Pecos counties, Texas AU - James W. Schmoker AU - Stephen L. Robbins PY - 1979 DO - 10.3133/ofr79361 UR - https://pubs.usgs.gov/publication/ofr79361 ID - ofr79361 ER -