If you do not need this report after it has served your purpose, please return it to the Geological Survey, using the official mailing label at the end UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGY OF THE MARATHON REGION TEXAS GEOLOGICAL SURVEY PROFESSIONAL PAPER 187

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If you do not need this report after it has served your purpose, please return it to the Geological Survey, using the official mailing label at the end UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGY OF THE MARATHON REGION TEXAS GEOLOGICAL SURVEY PROFESSIONAL PAPER 187

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Professional Paper 187 GEOLOGY OF THE MARATHON REGION, TEXAS
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