Mars Beckons: The Mysteries, the Challenges, the Expectations of Our Next Great Adventure in Space
Martian Enigmas : A Closer Look
Lunar Bases and Space Activities of the 21st Century
Proceedings of the Foundation Convention of the Mars Society
Strategies for Mars : A Guide to Human Exploration (Science and Technology Series (Paper), Vol 86)
Case for Mars III : Strategies for Exploration--Technology (Science and Technology Series, Vol 75)
Case for Mars III : Strategies for Exploration Technical (Science and Technology, Vol 75)
The Case for Mars (Science and Technology Series, Vol 57)
To Utopia and Back : The Search for Life in the Solar System
On Mars : Exploration of the Red Planet, 1958-1978
Planetary Mysteries : Megaliths, Glaciers, the Face on Mars, and Aboriginal Dreamtime (Io, No 37)
Proceedings of the Foundation Convention of the Mars Society