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    Drill-hole and surface-section data, Fort Union Formation, Bull Mountain coal field, south-central Montana : 209 records as entered in the National Coal Resources Data System by Connor, Carol Waite

    Published: U.S. Geological Survey, 1989
    Description: 305 leaves : illustrations, maps ; 28 cm.
    Government Document Book
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    Drill-hole and surface-section data, Fort Union Formation, Bull Mountain coal field, south-central Montana : 209 records as entered in the National Coal Resources Data System

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