Karpov's Brain 1985, New English Library Ltd, Sevenoaks

ISBN-13: 9780450058349

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Karpov's Brain 1984, Bantam Books

ISBN-13: 9780553243529

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Karpov's Brain 1984, New English Library Ltd, Sevenoaks

ISBN-13: 9780450060519

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Karpov's brain 1983, W. Morrow, New York

ISBN-13: 9780688018894

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