01362cam a22003131 4500 gs 56000111 DLC 20260227111404.0 780708s1955 dcuabd b f000 0 eng gs 56000111 (OCoLC)4032435 DLC OClU ISS OCoLC DLC n-mx--- QE75 .P9 no. 273 QE203.C3 W47 553.43 I 19.16:273 Wilson, Ivan F. (Ivan Franklin), 1916- Geology and mineral deposits of the Boles copper district, Baja California, Mexico, by Ivan F. Wilson in collaboratin with Victor S. Rocha. Washington, U.S. Govt. Print. Off., 1955. vi, 134 p. illus., maps (part fold., col.) diagrs., tables. 29 cm. Geological Survey (U.S.). Professional paper, 273 Part of illustrative matter in pocket. Prepared in cooperation with the Instituto Nacional para la Investigación de Recursos Minerales under the auspices of the Technical Cooperation Administration of the U. S. Dept. of State. "References cited": p. 128-132. Geology Mexico Baja California (Peninsula) Copper ores Mexico Baja California (Peninsula) Mines and mineral resources Mexico Baja California (Peninsula) 29040 29040