Emerald Decision 1982, Ballantine Books

ISBN-13: 9780345296450

Mass-market paperback

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Emerald Decision 1981, HarperCollins Distribution Services

ISBN-13: 9780006159889

New edition

Paperback

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Emerald Decision 1980, Holt McDougal, New York, NY

ISBN-13: 9780030569098

AMERICAN edition

Unknown binding

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