00302nam a2200121Ia 450000500170000000800410001704100080005808200150006610000140008124500310009526000450012630000090017120260720174559.0260720s2006    xx            000 0 und d  aeng  a930.7 KHAT  aKhan, M A  aTeaching of social studies  aNew DelhibCommonwealth Publishersc2006  a226p