00254nam a2200109Ia 4500082002100000100001800021245004100039260002600080300002800106500000500134700000500139  a658.4034bJ24.GI  aSingh, Jagjit  aGreat ideas of operations researchb  aNew YorkbDoverc1968  avii, 228p. Index, Bibl.  a  a