00296nam a2200121Ia 450000500170000000800410001704100080005808200150006610000170008124500310009826000360012930000090016520260720174758.0260720s2011    xx            000 0 und d  aeng  a930.7 MANT  aMangal S.K .  aTeaching of social studies  aNew DelhibP H I Learningc2011  a456p