00380nam a2200145Ia 4500008004100000020001800041041000800059082001900067100001500086245006200101260001900163300000900182365001600191700002700207230718s9999    xx            000 0 und d  a9788121909686  aeng  a658.4'034bGUP  aGupta P.K.  aProblems In Operations ResearchbPrinciples And Solutions  c2013bS. Chand  a1201  cRs.b540.00  aGupta P.K. & Hira D.S.