Title: Symposium of Gondwana Coals : Lisbon, 1983 : proceedings and papers /
Authors: Sousa, M. J. Lemos de.
Publisher: Published conjointly by Serviços Geológicos de Portugal and Instituto de Investigação Científica Tropical,
Year: 1984
Subjects: Coal Geology Congresses.; Gondwana (Continent) Congresses.