Firebaugh, Morris W. Artificial intelligence : knowledge based approach / By Morris w Firebaugh. - 1st ed. - Boston : Boyd and fraser publishing co , 1988. - xxiv,740p. ; PB 24 cm ISBN: 9780878353255 Subjects--Topical Terms: Basic search techniquesProblem solvingProduction systems Dewey Class. No.: 006.3 / FIRM