Author
Geological Survey (U.S.)
477
Kentucky Geological Survey
61
U.S. Atomic Energy Commission
55
Gilbert, Francis P.
17
Dibblee, T. W. (Thomas Wilson), 1911-2004
15
Zietz, Isidore, 1919-
15
Colton, Roger B. (Roger Burnham), 1924-
14
Hackman, Robert J.
12
California. Division of Mines and Geology
11
Andreasen, Gordon E., 1924-
10
Colorado Geological Survey
10
Colorado State Metal Mining Fund
10
Witkind, Irving J. (Irving Jerome), 1917-2008
10
Cater, Fred W. (Fred William), 1912-
9
Kirby, John R., Jr
9
Library of Congress. Congressional Research Service
9
Scott, Glenn R., 1918-2012
9
Katzman, Kenneth
8
Cathrall, John B.
7
Gott, Garland B. (Garland Bayard), 1912-1996
7
Pennsylvania. Bureau of Topographic and Geologic Survey
7
State Geological and Natural History Survey of Connecticut
7
Price, Don, 1929-
6
Ekren, E. B. (Einar Bartlett), 1923-
5
Briggs, Reginald P., 1929-2009
4
Drake, Avery Ala, 1927-
4
Drewes, Harald, 1927-2015
4
Lindsey, David A.
4
Luedke, Robert G.
4
Marshall, C. H. (Charles Harding)
4
Massachusetts. Department of Public Works
4
Moore, James Gregory, 1930-
4
Neuerburg, George J.
4
North Dakota Geological Survey
4
North Dakota State Water Commission
4
Roehler, Henry W.
4
Smith, Frances C., 1904-1986
4
Swadley, W. C.
4
U.S. Atomic Energy Commission. Division of Biology and Medicine
4
Vargo, Joseph L.
4
Arkansas Geological Commission
3
Baker, Jessica L.
3
Bergendahl, M. H. (Maximilian Hilmar), 1921-
3
Bromery, Randolph W. (Randolph Wilson), 1926-2013
3
Burbank, W. S. (Wilbur Swett), 1898-1975
3
Bush, Alfred Lerner, 1919-
3
Carr, Wilfred James, 1926-
3
Chandler, Evelyn J.
3
Connecticut Water Resources Commission
3
Dickey, D. D.
3
more ...