1-4 of 4 Books
Symposium of Gondwana Coals
Symposium of Gondwana Coals
By Symposium on Gondwana Coals (1983 Lisbon, Portugal)
Proceedings and papers [of the] 2d Gondwana Symposium, South Africa, July to August, 1970
Proceedings and papers [of the] 2d Gondwana Symposium, South Africa, July to August, 1970
By International Union of Geological Sciences Sub-Commission on Gondwana Stratigraphy and Palaeontology,University of Cape Town,University of the Witwatersrand,South African Council for Scientific and Industrial Research,International Symposium on Gondwana Stratigraphy and Palaeontology (2d 1970 University of Cape Town and University of the Witwatersrand)