000 00349nam a2200133Ia 4500
005 20260413101203.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aGupta , Prem Kumar & Hira D.S.
245 0 _aOperation Research
260 _bNew Delhi, S. Chand & Company
_c2k2
300 _a1043
942 _cBB
999 _c7423
_d7423