Author
Geological Survey (U.S.)
348
Geological Survey (U.S.),
202
United States. National Aeronautics and Space Administration
107
Afghan Geological Survey,
62
U.S. Task Force for Business and Stability Operations
60
Kokaly, Raymond F.,
29
King, Trude V. V.,
27
Planetary Geology and Geophysics Program (U.S.)
23
Scott, David Holcomb, 1916-
13
Tanaka, Kenneth L.
12
Astrogeology Research Program (Geological Survey)
9
Planetary Geology Program (U.S.)
9
Selner, G. I.
9
United States. National Aeronautics and Space Administration,
9
Head, James W.
8
Ryan, Darlene A.
8
Taylor, Richard B.
8
Colorado Geological Survey,
7
Crown, David A.
7
Denson, N. M. 1914-
7
Skinner, James A., Jr
7
U.S. Atomic Energy Commission. Division of Raw Materials
7
Colorado Geological Survey
6
Curtin, Gary C., 1935-
6
Greeley, Ronald
6
Hansen, Vicki L.
6
ScienceDirect (Online service)
6
Sims, P. K. 1918-2011
6
Varnes, David J. 1919-
6
Wilhelms, Don E.
6
Association of American State Geologists
5
Herkenhoff, Ken
5
Ivanov, M. A.
5
Jones, M. A. 1952-
5
Kuntz, Mel A.
5
Lockwood, John P.,
5
Macke, David L.
5
McGill, George E.
5
Planetary Geology and Geophysics Program (U.S.),
5
Tanaka, Kenneth L.,
5
Trusdell, Frank A.,
5
United States. Congress. House. Committee on Resources
5
United States. Congress. Senate. Committee on Energy and Natural Resources
5
United States. National Park Service
5
Zigler, J. L.,
5
Du Bray, E. A.
4
Guest, John
4
Hoefen, Todd M.,
4
Mathieux, D. Paul
4
Minor, Scott A.
4
more ...