Churchman, C. West 1913- Introduction to operations research / by C. West Churchman, Russell L. Ackoff and E. Leonard Arnoff, - New York : Wiley & sons, 1957 [printing 1960] - x, 645 p. : ill. ; 24 cm. Includes Index Subjects--Topical Terms: Operations research.Research, Industrial. Dewey Class. No.: 658.4034 / CHI 1960