000 00276nam a2200121Ia 4500
100 _aMacAshan H H
942 _cBK
245 _aElements of Educational Research
260 _aNew York
_bMc Graw hill
_c1962
082 _a370.78
_bMac
300 _aX,Iv.208
546 _aEnglish
999 _c332270
_d332270
041 _aeng