000 00314nam a2200121Ia 4500
008 220201s1971 xx 000 0 eng d
082 _a310
_bGUP
100 _aGUPTA (S.P)
245 0 _aReference evisionary Exercises in statistics .
260 _bSultan chand & sons
_aNew Delhi
_c1971
300 _a38
942 _2ddc
999 _c1114
_d1114