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B-26 Preliminary Report on the Underground Waters of a Part of Southeastern Colorado
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B-20 Preliminary Notes on the Revision of the Geological Map of Eastern Colorado
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B-19 The Cretaceous Formations of the Northeastern Colorado Plains and the Foothills Formations of North-Central Colorado
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B-08 The Clays of Eastern Colorado and Data Concerning Those Near Some Centers of Population Elsewhere in the State
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