by Ivan F. Wilson and Mario Veytia ; prepared in cooperation with the Universidad Nacional Autonoma de Mexico, Instituto de Geologia and Secretaria de la Economia Nacional Direccion General de Minas y Petroleo under the auspices of the Interdepartmental Committee on Scientific and Cultural Cooperation, Department of State
Other Title
Geologic investigations in the American Republics, 1947, manganese deposits, Lucifer district, Mexico