TY - RPRT TI - Principal facts and base station descriptions for gravity data compiled for the Santa Ana 1 degree by 2 degrees quadrangle, California AU - Robert Sikora AU - V.E. Langenheim AU - Shawn Biehler AU - L. A. Beyer AU - R. H. Chapman PY - 1993 DO - 10.3133/ofr93217 UR - https://pubs.usgs.gov/publication/ofr93217 ID - ofr93217 ER -