Sawyers Hugo and Nebula Award-winning novel explores morals and ethics on both human and cosmic scales. Likable characters facing big ethical dilemmas . . . [a] smoothly readable near-future SF novel.--"Publishers Weekly."

Rollback 2012, Tor Books, New York

ISBN-13: 9780765332400

Trade paperback

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Rollback 2008, Tor Books, New York

ISBN-13: 9780765349743

Mass-market paperback

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Rollback 2007, Tor Books, New York, NY

ISBN-13: 9780765311085

Hardcover

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