Legislação do carvão nacional.
Contributors: Brazil. Conselho Nacional do Petróleo. Assessoria de Relações Públicas.
Series: Coletânea Legislação ;; 1-3
Publisher: Conselho Nacional do Petróleo, Assessoria de Relações Públicas
Published: 1977
Place of publication: Brasília
Language: por
Subjects: Coal mines and mining -- Law and legislation -- Brazil.
Notes: Includes bibliographical references and index.