00321    a2200121   450000100060000008200170000610000240002324500660004725000060011326000410011930000160016060000230017677070  a658.4032 HIL  a Liberman S Hillier  aIntroduction to Operations Research, 7/ec Liberman S Hillier  a7  aIslamabadbNational Books Foundation  axxix 1214 p  aGerald J Lieberman