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![](./images/clear.gif) 1.- PETROLOGICAL CHARACTERISTICS OF SOME COAL SEAMS FROM RESERVA COUNTY, PARANA STATE, LOWER PERMIAN OF PARANA BASIN, BRAZIL;
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MADRID, 1983
CONGRESO INTERNACIONAL DE ESTRATIGRAFIA Y GEOLOGIA DEL CARBONIFERO. 10. ABSTRACTS/1983/MADRID
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