000 00430nas a2200133Ia 4500
008 140329n1981 ii |||gr||||Z||||||eng
082 _a370.5
100 _eAuthor.
245 0 _aEducational Research Vol. 24
_hBound Volumes
260 _aAgra
_bNational Foundation for Educational Research
_c1981
300 _a319.
653 _aEducation
942 _2ddc
_cBV
999 _c63240
_d63240