000 00403nam a2200133Ia 4500
008 230917s9999||||xx |||||||||||||| ||und||
040 _e156853
_aMAIN
041 _aEnglish
082 _a370 D14C
100 _aDalal, Ranju
245 0 _aComparative study of the effectiveness of concept attainment and advance organizer models on students' achievement in economics
300 _a323 p.
942 _cTH
999 _c125074
_d125074