Dutch 1995, NTC Publishing Group,U.S., Lincolnwood

ISBN-13: 9780844238869

2nd edition

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Dutch 1992, Teach Yourself Books, London

ISBN-13: 9780340272121

Revised edition

Hardcover

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Dutch 1976, Hodder Arnold H&S, London

ISBN-13: 9780340057780

2nd Revised edition

Paperback

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