1. Aeromagnetic map of the San Diego 1:100,000-scale quadrangle, California--Baja California Norte [microform] Yale Public content 1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; Books and Open-File Reports Section, distributor. English. Public. California, Southern, Mexico, and Baja California (State).