00302nam a2200121Ia 450000500170000000800410001704100080005808200160006610000190008224500220010126000480012330000090017120260720174543.0260720s2006    xx            000 0 und d  aeng  a370.71 SINT  aSudarshan, K N  aTeacher education  aNew DelhibDiscovery Publishing Housec2006  a295p