000 00260nam a2200109Ia 4500
008 220201s1999 xx 000 0 eng d
100 _aWAGNER, H.M.
245 0 _aPRINCIPLES OF OPERATION RESEARCH
260 _aDELHI
_bPHI
_c1999
300 _a1035
942 _2ddc
999 _c67897
_d67897