000			00335nam a2200145Ia 4500
008			150420s9999||||xx |||||||||||||| ||und||
082			_aPRA
100			_a"Prabhakaram,K S"
245			_aConcept Attainment model in Math.Teaching
250			_a2005
260			_bDiscovery Pub.
300			_aPRA
600			_aMath
942			_2ddc _cBK
999			_c8848 _d8848