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1.- COMPARATIVE PETROGRAPHIC AND GEOCHEMICAL STUDY OF THE PUERTOLLANO OIL SHALE KEROGENS PERGAMON; OXFORD-NEW YORK; III; INTERNATIONAL, 1996 Ver registro
2.- PETROLOGY, MINERALOGY AND GEOCHEMISTRY OF MINED COALS, WESTERN VENEZUELA ELSEVIER; AMSTERDAM; III; INTERNATIONAL, 2005 TSOP 2003; SELECTED PAPERS PRESENTED AT THE 20TH ANNUAL MEETING OF THE SOCIETY FOR ORGANIC PETROLOGY Ver registro
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