000 00281nam a2200121Ia 4500
008 210310s9999 xx 000 0 und d
040 _crty
100 _aGupta , S.P. and Gupta , Archana
245 0 _aStatistical Methods
260 _aNew Delhi
300 _a1999
942 _cTU
999 _c250243
_d250243