Commission for the Geological Map of the World, Ministery of Mines and Energy, National Department of Mineral Production (Brazil), with the collaboration of Unesco ; co-ordinator general, Fernando Flávio Marques de Almeida ; [translation from the Spanish text by Frances Delany]
editado por el Instituto Geologico y Minero de España ; España: M. Julivert y J.M. Fontbote, con la colaboración de: F. Aldaya ... [and others] ; Portugal: A. Ribeiro y L. Conde, con la colaboración de: F. Moitinho de Almeida ... [and others]