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  1. 1
    The mines of Colorado /
    Microform Book
  2. 2
    Analytical results and sample locality map of rock samples from the White Mountains Recreation Area, Livengood and Circle quadrangles, east-central Alaska /
    Published 1987
    Government Document Microform Book
  3. 3
    Analytical results and sample locality map of stream-sediment and heavy-mineral-concentrate samples from the Diamond Breaks Wilderness study area (CO-010-214/UT-080-113), Moffat County, Colorado, and Daggett County, Utah /
    Published 1988
    Government Document Microform Book
  4. 4
    Bibliography for update and revision of U.S.G.S. Bulletin 1114: Minerals of Colorado : a 100 year record, by Edwin B. Eckel /
    Government Document Microform Book
  5. 5
    ASCII database of principal lode mines and mineralized areas in southern Summit County, Colorado.
    by Wilson, Anna B. (Anna Burack)
    Published 1991
    Government Document Microform Book
  6. 6
    Natural acid drainage from altered areas within and adjacent to the upper Alamosa River basin, Colorado.
    Government Document Microform Book
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