TY - RPRT TI - Aeromagnetic maps of the Colorado River region including the Kingman, Needles, Salton Sea, and El Centro 1 degree by 2 degrees quadrangles, California, Arizona, and Nevada AU - John Mariano AU - V.J. Grauch PY - 1988 DO - 10.3133/mf2023 UR - https://pubs.usgs.gov/publication/mf2023 ID - mf2023 ER -