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1.- SOME SPECULATIONS ON COAL-RANK ANOMALIES OF THE SOUTH TEXAS GULF PROVINCE AND ADJACENT AREAS OF MEXICO AND THEIR IMPACT ON COAL-BED METHANE AND SOURCE ROCK POTENTIAL U. S. GEOLOGICAL SURVEY; RESTON, VA; USA; UNITED STATES, 1999 TERTIARY COALS IN SOUTH TEXAS; ANOMALOUS CANNEL-LIKE COALS OF WEBB COUNTY (CLAIBORNE GROUP, EOCENE) AND LIGNITES OF ATASCOSA COUNTY (JACKSON GROUP, EOCENE); GEOLOGIC SETTING, CHARACTER, SOURCE-ROCK AND COAL-BED METHANE POTENTIAL Ver registro
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