In the first novella, an alien spy threatens to sabotage a secret project that could give the Earth overwhelming advantage in space, and in the second, the Sirian empires establishes an outpost on the Saturnian moon. Reprint.
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Book Description Fawcett, 1978. Mass Market Paperback. Book Condition: New. Never used!. Bookseller Inventory # P110449234223
Book Description Fawcett. MASS MARKET PAPERBACK. Book Condition: New. 0449234223 New Condition. Bookseller Inventory # NEW7.1100652