The Crystal Memory Hardcover – January 1, 1987 by Stephen Leigh
 
1987 Avon hardcover, Stephen Leigh (Speaking Stones). It is 2170, Decades ago, the Great Bust destroyed Earth's space-exploration program, trapping humanity in the midst of a vast solar system. Then the T'Rajek came, flaunting their mighty stardrive... and humankind gave up. Except for a power hungry few who were determined to get the T'Raijek's advanced technology at any cost.
 
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