Author
Geological Survey (U.S.),
55
Geological Survey (U.S.)
45
United States. Bureau of Mines
37
Gardner, E. D. 1885-
9
Hafen, LeRoy R. 1893-1985
9
Ransome, F. L. 1868-1935
9
EBSCOhost
8
Prindle, L. M. 1865-1956
8
Moffit, Fred H. 1874-1958?
7
Brooks, Alfred H. 1871-1924
6
Gannett, Samuel S. 1861-1939
6
Prindle, L. M. 1865-1956,
6
Smith, Philip S. 1877-1949
6
Bancroft, Caroline
5
Emmons, William H. 1876-1948
5
Lindgren, Waldemar, 1860-1939
5
Ransome, F. L. 1868-1935,
5
Schrader, Frank C. 1860-1944
5
Colorado Geological Survey
4
Feitz, Leland
4
Films for the Humanities & Sciences (Firm)
4
Garrey, G. H. 1886-
4
Infobase
4
Lorain, S. H.
4
Nafziger, Agnes
4
ScienceDirect (Online service)
4
Smith, Duane A.
4
Staley, W. W. 1898-1992
4
United States. Bureau of Land Management
4
United States. Bureau of Land Management. Alaska State Office,
4
Allsman, Paul Trekell, 1898-
3
Anderson, Alfred L. 1900-1964
3
Bain, Harry Foster, 1872-1948
3
Capps, Stephen R. 1881-1949
3
Collier, Arthur J. 1866-1939
3
Fenneman, Nevin Melancthon, 1865-1945
3
Frishman, David
3
Gannett, Henry, 1846-1914
3
Guiteras, Joseph Ramon, 1888-1973
3
Huber, Carol
3
Idaho Bureau of Mines and Geology
3
Infobase,
3
Knopf, Adolph, 1882-1966
3
Kurtak, Joseph M.
3
Levine, Brian
3
Leyendecker, Liston E.
3
Lindgren, Waldemar, 1860-1939,
3
Martin, G. C. 1875-1943
3
Moffit, Fred H. 1874-1958?,
3
Nevada Bureau of Mines
3
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