00311nam a2200121 a 450000500170000002000150001708200180003210000250005024500480007526000280012330000220015170000160017320251203110322.0  a8173193835  a658.4034bAGA  aAgarwal, Manju Latga  aRecent developments in operational research  aNew DelhibNarosac2001  ax,435p.c22cmbHB  aSen, Kanwar