TY - RPRT TI - Principal facts for gravity stations and base-station net in the Silver City 1 degree x 2 degrees Quadrangle, Arizona and New Mexico AU - Jeffrey C. Wynn PY - 1981 DO - 10.3133/ofr8140 UR - https://pubs.usgs.gov/publication/ofr8140 ID - ofr8140 ER -