Introduction to operations research / Frederick S. Hillier, Stanford University, Gerald J. Lieberman, late, of Stanford University. Hillier, Frederick S. Lieberman, Gerald J. Operations research. T57.6 .H53 2015 310.72 23 HII Includes index. San Francisco : Holden-Day, c1967. c1967. 1967 Text x, 639 p.: eng