000 00274nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _a510
100 _aGupta,S.P.
245 0 _aStatistical methods
250 _a4th
260 _bSultan chand & sons
_aNew Delhi
942 _2ddc
999 _c893
_d893