. . . . . . . . . "Studies on the geology and geologic hazards of the greater San Diego area, California a guidebook prepared for the May 1973 field trip of the San Diego Association of Geologists and the Association of Engineering Geologists"@en . . . . "Studies on the geology and geologic hazards of the greater San Diego area, California : a guidebook prepared for the May 1973 field trip of the San Diego Association of Geologists and the Association of Engineering Geologists"@en . . . .