Geological Survey (U.S.), 156
Geological Survey (U.S.) 110
Johnson, Ronald C. 1950- 9
United States. Department of Energy 9
Wolfe, Jack A., 1936- 8
Geological Survey of Wyoming 7
Colorado Geological Survey 6
Hansen, Wallace R., 1920- 6
University of Wyoming. Department of Geology 6
Woodring, W. P. 1891-1983 6
Woodring, W. P. 1891-1983, 6
Dickinson, Kendell A., 1931- 5
Keefer, William R., 1924- 5
Knowlton, Frank Hall, 1860-1926, 5
MacNeil, F. Stearns 1909- 5
Moore, Ellen James 5
Addicott, Warren O., 4
Du Bray, E. A. 4
Kentucky Geological Survey 4
Moore, Ellen James, 4
Puerto Rico. Department of Industrial Research, 4
Ambrose, Carol Morgans Tremain 3
Bartow, J. Alan 3
Carr, Wilfred James, 1926- 3
Case, James E., 1933- 3
Clark, William Bullock, 1860-1917 3
Darton, Nelson Horatio, 1865-1948 3
Diller, J. S. 1850-1928 3
Ketner, Keith B., 1921-2019, 3
Knowlton, Frank Hall, 1860-1926 3
Nichols, Douglas J. 3
Nilsen, Tor Helge 3
Nilsen, Tor Helge, 3
Owens, James Patrick, 1924- 3
Poore, Richard Z. 3
Poore, Richard Z., 3
Puerto Rico. Department of Industrial Research 3
Rau, Weldon W. 3
Roberts, Stephen B. 3
Snavely, P. D. 1919-2003 3
Stanley, Richard G. 3
Sweetkind, Donald S. 3
United States. Bureau of Indian Affairs 3
White, Charles A. 1826-1910 3
White, Charles A. 1826-1910, 3
Addicott, Warren O. 2
Alpha, Andrew G., 2
Anderson, John J. 1930- 2
Anderson, R. Ernest 2
Bader, J. W. 2
Bartow, J. Alan, 2
Barus, Carl, 1856-1935 2
Berry, Edward Wilber, 1875-1945, 2
Beyer, Larry A. 2
Brabb, Earl E., 1929- 2
Brewster-Wingard, G. Lynn 2
Bukry, David 2
California. Division of Mines and Geology 2
Campbell, Russell H., 1928- 2
Carlston, Charles W. 1912- 2
Carter, William Douglas, 1926- 2
Chapin, Charles E. 1932- 2
Clark, William Bullock, 1860-1917, 2
Cole, W. Storrs 1902-1989 2
Cole, W. Storrs 1902-1989, 2
Dall, William Healey, 1845-1927 2
Dall, William Healey, 1845-1927, 2
Dibblee, T. W. 1911-2004, 2
Dutton, Clarence E. 1841-1912 2
Ekren, E. B. 1923- 2
Epis, Rudy C., 1930- 2
Ford, Arthur B. 1932- 2
Fouch, Thomas D. 2
Fox, Kenneth F. 2
Fox, Kenneth F., 2
Franczyk, Karen J. 2
Franczyk, Karen J., 2
Garrison, Robert E. 2
Geological Survey (U.S.). Office of the World Energy Resources Program 2
Geological Survey of Pakistan 2
Georgia Geologic Survey 2
Hedlund, David Carl, 1924- 2
Hill, Robert Thomas, 1858-1941 2
Hollick, Charles Arthur, 1857-1933, 2
Hosman, R. L. 2
Izett, Glen Arthur, 1928- 2
Jicarilla Apache Tribe of the Jicarilla Apache Indian Reservation 2
Kent, Bion H. 1925- 2
Lindsey, David A. 2
Love, J. D. 1913-2002 2
Marjaniemi, Darwin Keith, 1940- 2
McCulloh, Thane Hubert, 1926- 2
McIntyre, David H., 2
McKee, Edwin H. 2
McKee, Edwin H., 2
Minard, James P. 2
Minard, James P., 2
Molenaar, C. M. 2
Mosier, Dan L. 2
Muffler, L. J. Patrick 1937- 2