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]
coordenadores: Carlos Schobbenhaus ... [and others] ; República Federativa do Brasil, Ministério das Minas e Energia, Departamento Nacional da Produção Mineral