Author
SpringerLink (Online Service)
51
United States. National Aeronautics and Space Administration
26
Geological Survey (U.S.)
16
SpringerLink (Online service)
13
United States. National Aeronautics and Space Administration,
13
Geological Survey (U.S.),
11
United States. National Park Service
8
ScienceDirect (Online service)
7
United States. Bureau of Land Management,
6
Harland, David M. 1955-
5
United States. National Park Service,
5
Lewis Research Center
4
Moore, H. J. 1928-
4
United States. National Aeronautics and Space Administration. History Office
4
United States. Navy Department
4
Aerospace Center (U.S.)
3
Byrne, Charles J., 1935-
3
El-Baz, Farouk
3
Hare, Trent M.,
3
Jet Propulsion Laboratory (U.S.)
3
NASA Advisory Council. Heliophysics Subcommittee
3
United States,
3
United States. Navy Department,
3
Aeronautical Chart and Information Center (U.S.)
2
Aldrin, Buzz,
2
Armstrong, Neil, 1930-2012,
2
Branley, Franklyn M. 1915-2002
2
Carle, Eric
2
Collins, Michael, 1930-2021,
2
Cortright, Edgar M.
2
EBSCOhost
2
Eggleton, R. E. 1932-
2
George C. Marshall Space Flight Center
2
Hansen, James R.
2
Hansen, James R.,
2
Hartsfield, John W.
2
Hodges, Carroll Ann
2
Infobase,
2
Lin, Grace
2
Louter, David
2
Lunar Science Conference
2
Lunar Science Conference Houston, Tex.)
2
Lunar Science Institute
2
Lyndon B. Johnson Space Center
2
Makishima, Akio
2
McCauley, John F.
2
McCauley, John F.,
2
NASA Aerospace Education Services Project (U.S.)
2
Natural Resource Program Center (U.S.),
2
Orloff, Richard W., 1948-
2
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