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Geology and Ore Deposits of the San Francisco and Adjacent Districts, Utah
From introduction: This report describes the mapping of the surface geology of the San Francisco and adjacent districts in Utah.
Date:
1913
Creator:
Butler, B. S.
System:
The UNT Digital Library
Geology and Ore Deposits of the Breckenridge District, Colorado
Study of the geology and ore deposits of the Breckenridge District in Colorado.
Date:
1911
Creator:
Ransome, Frederick Leslie
System:
The UNT Digital Library