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Unknown, 1992
Current format, Unknown, 1992, , No Longer Available.
Unknown, 1992
Current format, Unknown, 1992, , No Longer Available. Offered in 0 more formats
An introduction to the problems of space travel for the general reader. Discusses current technology, relativity theory, navigation, biological requirements, psychological considerations, and the possibility of other civilizations. Distributed by UNIVELT. Annotation c. by Book News, Inc., Portland, Or.
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