000 00297nam a2200133Ia 4500
008 230118s9999||||xx |||||||||||||| ||und||
082 _a658.4034
082 _bGOE/O
100 _aDR.B.S
_bGOEL
245 0 _aOPERATIONAL RESERCH
260 _aMEERUT
260 _bpragati prakashan
260 _c1973
999 _c7583
_d7583