000 00271nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aPathak, R.P.
245 0 _aStatistics In Educational Research
260 _aNew Delhi
_bKanishka
_c2009
300 _a142p.
942 _cBK
999 _c14651
_d14651