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From the Publisher: This new edition combines a thorough, balanced treatment of theory and practice with a complete package of CLIPS 6.0 software tools for developing expert systems. It features a balanced blend of expert systems theory and practice; a detailed presentation of CLIPS Version 6.0, a rule-based programming language for expert systems design; and an IBM PC 3 1/2'' disk which contains the complete CLIPS 6.0 executable shell and sample programs for developing expert systems.
A Sun, study studied this question.