000 00270nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aC B Gupta
245 0 _aIntroduction to statistical methods
260 _aAgra
_bRam Prasad & Sons
_c1974
650 _aMath
942 _cBK
999 _c2571
_d2571