Author
Geological Survey (U.S.)
26
Cobban, William A., 1916-2015
6
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
5
EBSCOhost
4
Rocky Mountain Association of Geologists
4
Geological Society of America
3
Pacific Coast Paleogeography Symposium
3
Sando, William Jasper
3
Seiler, R. L.
3
Stegner, Wallace, 1909-1993
3
Buehl, Olivia Bell,
2
Geological Survey (U.S.),
2
Hausel, W. Dan
2
Hayden, F. V. 1829-1887
2
Ingram, B. Lynn, 1961-
2
Johnson, Kirk R.
2
Kirk, Donald R.
2
Little, Elbert L. 1907-2004,
2
Malamud-Roam, Frances, 1961-
2
Mullens, Marjorie C.
2
National Audubon Society
2
National Operations Center (U.S.),
2
Pendleton, Rosemary Laycock, 1955-
2
Peterson, Roger Tory, 1908-1996
2
ProQuest (Firm)
2
Rayfield, Susan,
2
Rocky Mountain Research Station (Fort Collins, Colo.)
2
Society of Economic Paleontologists and Mineralogists. Rocky Mountain Section
2
Stewart, J. H., 1928-2013
2
Troll, Ray, 1954-
2
United States. Bureau of Land Management
2
United States. Bureau of Reclamation
2
Wilshire, Howard Gordon, 1926-
2
Wyoming Geological Association
2
Young, Michael K.
2
Adams, Ansel, 1902-1984
1
Addicott, Warren O.
1
Akerbergs, Biruta,
1
Aldon, Earl F.
1
American Association of Petroleum Geologists
1
American Association of Petroleum Geologists. Annual Meeting
1
American Association of Petroleum Geologists. Energy Minerals Division
1
American Association of Petroleum Geologists. Rocky Mountain Section
1
American Geological Institute
1
Anderson, J. Lawford
1
Anderson, John J. 1930-
1
Armentrout, John M.
1
Ashcroft, Gaylen L.,
1
Astro, Richard
1
Baerg, Harry J.
1
more ...