BOOK REVIEWSBook reviewsParsonsSimonAdvanced Computation Laboratory, Imperial Cancer Research Fund, London, UK06199492208211Textbooks for artificial intelligence Essentials of artificial intelligence by GinsburgMatt, KaufmannMorgan, 1993, £26.50, pp 430, ISBN 1-55860-221-6Formal concepts in artificial intelligence—fundamentals by ShinghalRajjan, Chapman & Hall, 1992, £19.95, pp 666, ISBN 0-412-40790-6Artificial intelligence—structures and strategies for complex problem solving by LugerGeorge F. and StubblefieldWilliam A., Benjamin/Cummings, 1993, pp 740, ISBN 0-8053-4780-1Knowledge engineering, Volume 1, Fundamentals edited by AdeliHojjat, McGraw Hill, 1990, £21.95, pp 345, ISBN 0-07-000355-6Knowledge engineering, Volume 2, Applications edi