Author
Geological Survey (U.S.)
200
Colorado Geological Survey
78
United States. Bureau of Mines
47
Cappa, James A.
21
Cobb, Edward H. 1916-1983
21
Hemborg, H. Thomas
13
Keller, John W. 1964-
12
Colorado. Bureau of Mines
10
Garrison, Rachel E.
10
TerBest, Harry
10
Nokleberg, Warren J.
7
Carroll, Christopher J.
6
Hudson, Travis, 1946-
6
Koenig, Nicole V.
6
Rossiĭskai{u0361}a akademii{u0361}a nauk
6
Dover, James H.
5
Ludington, Steve
5
Widmann, Beth L.
5
Ambrose, Carol Morgans Tremain
4
Colorado. Division of Minerals and Geology
4
Crane, Melissa J.
4
Hornbaker, A. L.
4
Idaho Geological Survey
4
Klimasauskas, Ed
4
Mayfield, Charles F.
4
O'Keeffe, Michael K.
4
Patton, Horace Bushnell, 1858-1929
4
Wray, Laura L.
4
Afghanistan. Department of Geological Survey
3
Ariunbilėg, S. 1944-
3
Brchan, Cheryl
3
Britton, Joe
3
Colorado. Office of State Geologist
3
Eppinger, R. G.
3
George, Russell D., 1866-
3
Grybeck, D. J.
3
Idaho State University
3
Nelson, Steven W.
3
Pilcher, Steven H.
3
Rockwell, Barnaby W.
3
Schwochow, S. D.
3
Streufert, Randall K.
3
University of Idaho
3
Wilson, Anna B.
3
Afghanistan. Vizārat-i Maʻādin va Ṣanāʼiʻ
2
Anderson, E. D.
2
Baker, Michael S.
2
Bartsch-Winkler, S.
2
Bennett, Earl H.
2
Berry, Karen
2
more ...