00307    a2200109   4500020001500000082001800015100002300033245005500056260004000111300002300151650002300174  a0824780396  a658.4034bHAS  aHastings, Kevin J   aIntroduction to mathematics of operations research  aNew YorkbMarcel Dakkerc1989g1989  aviii, 407p.c24cm.  aOperation research