000 00294nam a2200133Ia 4500
100 _aLewis, D.G.
020 _a-
942 _cBK
245 _aExperimental design in Education
260 _aLondon
_bUniversity of London
_c1968
082 _a370.78
_bLew
300 _a192
546 _aEnglish
999 _c341166
_d341166
041 _aeng