Tweedlioop Mass Market Paperback – Apr 8 1992
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About the Author
STANLEY SCHMIDT, Ph.D., is the Editor of Analog Science Fiction/Science Fact magazine, for which he has received 16 Hugo Award nominations. He is the author of four novels, including Lifeboat Earth and Newton and the Quasi-Apple, and is a member of the Board of Advisors of the National Space Society.
ROBERT ZUBRIN, Ph.D., is an astronautics engineer whose work has been profiled in Newsweek and Air & Space/Smithsonian magazines. He is a member of the Board of Directors of the National Space Society and a Fellow of the British Interplanetary Society. --This text refers to the Paperback edition.