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- Space flight to Mars
- Exploration 90
- Manned space flight 20
- History 14
- Planets 13
- Astronautics and state 11
- Exploration of Mars (Planet) 10
- Space vehicles 10
- Government policy 9
- Interplanetary voyages 7
- Planning 7
- Space flight to the moon 7
- Astronautics 6
- Mars probes 6
- Appropriations and expenditures 4
- Exploration of outer space 4
- International cooperation 4
- Research 4
- Space microbiology 4
- Astronautics and civilization 3
- Discoveries in geography 3
- Manned Mars missions 3
- Mars (Planet) 3
- Mission planning 3
- Propulsion systems 3
- Space flight to Venus 3
- Viking rockets 3
- Description and travel 2
- Enterprise (Imaginary space vehicle) 2
- Geology 2
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Mars : past, present, and future / edited by E. Brian Pritchard.
Published 1992Conference Proceeding Book
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