00490nam a2200145Ia 450000500170000000800410001704100080005808200160006610000290008224500540011126000480016530000090021399900190022295201030024120260720174554.0260720s2006    xx            000 0 und d  aeng  a370.78 PRAC  aPrabhakaran, K S9268383  aConcept attainment model in mathemaatics teaching  aNew DelhibDiscovery Publishing Housec2006  a101p  c242461d242461  001040708BEDaALbALd2026-07-20l0o370.78 PRACpBED00853r2026-07-20 17:45:54w2026-07-20yBK