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Contributions to Economic Geology (Short Papers and Preliminary Reports), 1911: Part 1 -- Metals and Nonmetals Except Fuels
From introduction: The growing economic importance of the Carrville district, Trinity County, California merits notice, and it is hoped that this brief report will direct attention toward it, to the end that mining in general may be benefited.
Date:
1913
Creator:
Lindgren, Waldemar
System:
The UNT Digital Library
Geology and Ore Deposits of Lemhi County, Idaho
From introduction: The present report embodies the results of reconnaissance studies in the nineteen mining districts of Lemhi County, Idaho.
Date:
1913
Creator:
Umpleby, Joseph B.
System:
The UNT Digital Library