00379n a2200157 a 4500 B B 008276 20220201173137.0 003 M87 Cohen, S S Operation Reserch London English langauge Book Society fitaman Publishing 1987 vii,245p. Operations research T 0 0 0 0 SGGSCC SGGSCC 2020-09-22 0 003 M87 9539 2020-09-22 00:00:00 2020-09-22 BK 8276 8276