003530000a22001210004500060000800000082001600008100002100024245008000045260004600125260000900171300000900180650004200189  a100  a001.424 WAG  aWagner, Harvey M  aPrinciples of operations research with applications to managerial decisions  aNewdelhi, Prentice- Hall of India Pvt Ltd  c1975  a1039  aOperations research / decision making