000			00415nam a2200133Ia 4500
008			230917s9999||||xx |||||||||||||| ||und||
040			_e89723 _aMAIN
041			_aEnglish
082			_a370.1523 R298E
100			_aRenu Bala
245		0	_aEffect of mastery learning and concept attainment model on pupils achievement in science, their self-concept and class-room trust behaviour
300			_a262 p.
942			_cTH
999			_c87031 _d87031