000 00316nam a2200121Ia 4500
100 _aGupta S.P Gupta P.K; Manmohan
245 _aBusiness Statistics and Operations Research
250 _a2
260 _c1998
_bSultan Chand and Sons
_aNew Delhi
300 _a896p.
650 _aBusiness statistics
_aO R
942 _cBK
999 _c81455
_d81455