Gupta, P. K. Problems in operations research : principles and solutions / P. K. Gupta and D.S.Hira - 1st. ed. - New Delhi : S. Chand, 2001 - 1078p.; 22 cm. ISBN: 8121909686. Subjects--Topical Terms: Operations research Dewey Class. No.: 658.5076 / GUP 2001