000 00302nam a2200121Ia 4500
008 210901s1998 xx 000 0 eng d
082 _a310 GUP
100 _aGupta, S.P.
245 0 _aStatistical methods
250 _a4th rev. ed.
260 _aNew Delhi
_bSultan Chand & Sons
_c1998
942 _2ddc
_cBK
999 _c23071
_d23071