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Author/Creator
- Geological Survey (U.S.)199
- United States. National Aeronautics and Space Administration15
- Planetary Geology Program (U.S.)12
- Corporación Venezolana de Guayana. Técnica Minera8
- Denson, N. M. (Norman MacLaren), 1914-7
- Kansas Geological Survey7
- Du Bray, E. A.6
- Gibson, M. L.6
- Johnson, William D., Jr.6
- Sims, G. L.6
- Wolf, R. J.6
- Lucchitta, Ivo5
- Wynn, Jeffrey C.5
- Ashley, Roger P. (Roger Parkmand), 1940-4
- Evarts, Russell C.4
- Hansen, Cristi V.4
- Kellogg, Karl S.4
- M'Gonigle, John W.4
- Pallister, John S.4
- Suneson, Neil, 1950-4