000 00315nam a2200109Ia 4500
100 _aJournal of Educational Psychology Vol;63
942 _cBV
654 _a
245 _aJournal of Educational Psychology Vol;63
_bFeb-Dec 1972
260 _aWashington
_bAmerican Psychological Association
_c1972
082 _a370.1505
999 _c386155
_d386155
041 _aeng