Alles van: Robert Zubrin
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Robert Zubrin Mars on earth
the adventures of space pioneers in the high Arctic
Engels | 351 pagina's | Jeremy P. Tarcher/Penguin, New York | 2003
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Robert Zubrin The case for Mars
the plan to settle the red planet and why we must
Engels | 328 pagina's | The Free Press, New York [etc.] | 1996
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