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Institution
Collection
Subject
13
Geology
2
Industrial minerals
2
Mineralogy
2
Mines and mineral resources
1
Arsenic
1
Calderas
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1
Crazy Mountains (Mont.)
1
Geology, Stratigraphic
1
Gold mines and mining
1
Groundwater
1
Gypsum
1
Silver industry History
1
Silver mines and mining History
1
Tungsten ores
1
Volcanic ash, tuff, etc
1
Water-supply
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Author
5
Colorado Geological Survey
2
Cooperative Geological Mapping Program (U.S.)
2
Wilson, William H. 1917-
1
Bullock, James M.
1
Cappa, James
1
Cappa, James A.
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1
Colorado Historical Society
1
De Voto, Richard H.
1
Fisher, Frederick S., 1937-
1
Gardiner, Harvey N.
1
Groff, Sidney Lavern, 1919-
1
Hawley, Charles C.
1
Kirkham, Robert M.
1
Lawson, Allison D.
1
Lozano, Efraim
1
McGrew, Alan R.
1
Muilenburg, G. A.
1
Scarbrough, Alex
1
Seager, George F., 1909-
1
Sims, John D.
1
Tobey, Eugene Francis
1
Wallace, C. A. 1942-
1
Widmann, Beth L.
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