Gadget 2002, House of Stratus, North Yorkshire

ISBN-13: 9781842328705

Trade paperback

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Gadget 1978, Firecrest Pub., Bath

ISBN-13: 9780851190259

Large type edition

Hardcover

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Gadget 1977, Coward McCann, New York, NY

ISBN-13: 9780698108103

American edition

Unknown binding

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Gadget 1977, William Heinemann Ltd, London

ISBN-13: 9780434271825

Hardcover

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