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  1. A preliminary report on the geology of the Monarch mining district, Chaffee County, Colorado / by R.D. Crawford.
    By: Crawford, R. D. (Ralph Dixon), - Colorado Geological Survey.
    Publication info: Boulder :Colorado Geological Survey,1910.
    Holding Institution: University of British Columbia Library (archive.org)
    Subjects: Colorado  Geology  Monarch Region  
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