000 00297nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aJournal of Educational Psychology
260 _aAmerican Psychological Association
_bWashington
_c1 Jan-30 Jun,1990
362 _a82-82
_b01-Feb
942 _2ddc
_cJ
999 _c189489
_d189489