Author
Geological Survey (U.S.)
11
Geological Survey (U.S.),
8
Guild, Philip White, 1915-
4
Colorado Geological Survey
3
Chirico, Pete,
2
United States. Bureau of Land Management
2
United States. Bureau of Mines
2
Afghan Geological Survey
1
Afghan Geological Survey,
1
Arbogast, B. F.
1
Babcock, James W.
1
Battelle Memorial Institute. Battelle Project Management Division. Office of Nuclear Waste Isolation
1
Bennett, G. J.
1
Bernknopf, Richard L.
1
Bookstrom, Arthur A.
1
Brown, C. N.
1
Bryant, Mark
1
Bullock, John H.
1
Calkins, James Alfred, 1923-
1
Cappa, James A.
1
Casey, Brittany N.,
1
Colorado Association
1
Colorado. Office of State Geologist
1
DeWitt, Jessica D.,
1
Denver Civic and Commercial Association
1
Denver Region Exploration Geologists Society
1
Derry, Duncan R.
1
Diggles, M. F.
1
Epis, Rudy E.
1
Eppinger, R. G.,
1
Evans, William Gray, 1855-1924
1
Fischer, R. P. 1910-1991
1
Forrester, James Donald, 1906-1979
1
Geological Survey of Canada,
1
George, Russell D., 1866-
1
Giles, Stuart A.,
1
Gray, John E., 1956-
1
Johnson, Bruce R.
1
Kiilsgaard, Thor H.
1
King, John R.
1
Klein, T. L.,
1
MacKallor, J.
1
Malpeli, Katherine C.,
1
Mars, John L.,
1
Matson, C. R.
1
McGimsey, Robert G.
1
Merrell, Harvey W.
1
Miller, Marti L.
1
Mineral Resources Program (Geological Survey)
1
Moore, Richard T.
1
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