Churchman, C. West. Introduction to operations research / C. West Churchman, Russell L. Ackoff and E. Leonard Arnoff. - New Delhi : Prentice Hall , 1989. - x,645p. : ill.,figs. ; 23cm 1 Floppy . Includes bibliography and index ISBN: NULL (Pbk) Subjects--Index Terms: OPAERATION RESEARCH Dewey Class. No.: 033 / CHU/I