Darlington, Keith. The essence of expert systems / Keith Darlington. - Harlow, England ; New York : Prentice Hall, 2000. - xiv, 167 p. : ill. ; 24 cm. - The essence of computing series . Includes bibliographical references and index. ISBN: 0130227749 (pbk.) LCCN: 99038354 Subjects--Topical Terms: Expert systems Computer science LC Class. No.: QA76.76.E95 Dewey Class. No.: 006.3/3