00310nam a2200121Ia 450000500170000000800410001704100080005808200150006610000140008124500390009526000450013430000090017920260720174600.0260720s2006    xx            000 0 und d  aeng  a930.7 KHAT  aKhan, M A  aTeaching social studies in schools  aNew DelhibCommonwealth Publishersc2006  a302p