edited by J. J. Bigarella, R. D. Becker and I. D. Pinto; prepared under the auspices of the Conselho Nacional de Pesquisas and others. Brazilian contribution to The International Symposium on the Gondwana Stratigraphy and PaleontologyInstituto de Geologia1967
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Author Heading..., Irajá Damian Becker, Rosemarie Dora Conselho Nacional de Pesquisa...