Prague 1996, APA Publications (HK) :: Distributed in the U.S. by Houghton Mifflin, [Hong Kong] :: Boston, Mass.

ISBN-13: 9780395825204

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Prague 1995, APA Publications :: Distributed in the U.S. by Houghton Mifflin, Singapore :: Boston

ISBN-13: 9780395754986

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Prague 1993, Houghton Mifflin, Singapore

ISBN-13: 9780395662380

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Prague 1989, APA, [London]

ISBN-13: 9780245548253

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