00302nam a2200121Ia 450000500170000000800410001704100080005808200130006610000160007924500280009526000480012330000090017120260720174530.0260720s2005    xx            000 0 und d  aeng  a370 NUNP  aNunn, Percy  aPrinciples of education  aNew DelhibDiscovery Publishing Housec2005  a338p