000 00257nam a2200121Ia 4500
100 _aGupta, S. P.
942 _cBK
245 _aStatistical methods
260 _aNew Delhi
_bS. Chands & Co.
082 _a311
_bGup
300 _aVarious
546 _aEnglish
999 _c334964
_d334964
041 _aeng