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/ Thrice Upon a Time
US paperback, Del Rey 1980 Paper
Japan paperback, Tokyo Sogensha 1982
Germany paperback, Moewig 1985
Germany paperback, Moewig 1987
US paperback, Baen 2000 Paper
US on-line edition, Baen 2000 e-book
US on-line edition
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ISBN SKU: 0671319485
Thrice Upon a Time
A machine that sends messages back to itself through time reveals a new, startling physics governing events in the universe, and provides a potent instrument for dealing with human affairs.
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Content © The Estate of James P. Hogan, 1998-2014. All rights reserved.