00262nam a2200097Ia 450000500170000000800410001710000350005824500230009326000390011630000090015520260413101203.0230516s9999||||xx |||||||||||||| ||und||  aGupta , Prem Kumar & Hira D.S. 0aOperation Research  bNew Delhi, S. Chand & Companyc2k3  a1043