00298nam a2200121Ia 450000500170000000800410001704100080005808200160006610000170008224500310009926000340013065000120016420250729165815.0250729s2005    xx            000 0 und d  aeng  a900.50 AGGT  aJ.C.Aggarwal  aTeaching of Social Studies  aNoidabVikas Publishingc2005  aHistory