00296nam a2200121Ia 450000500170000000800410001704100080005808200150006610000170008124500310009826000360012930000090016520260720174820.0260720s2013    xx            000 0 und d  aeng  a900.7 MANT  aMangal S.K .  aTeaching of Social Studies  aNew DelhibP H I Learningc2013  a456p