00394nam a2200145Ia 450000500170000000800410001702000180005804100080007608200150008410000170009924500310011626000510014730000100019865000400020820210210165154.0190710s9999    xx            000 0 und d  a81-7648-724-4  aeng  a372.83 SI3  aSingh, Y. K. 0aTeaching of Social Studies  aNew Delhib: APH Publishing Corporation,c2018  a295p.  aSocial sciences--Study and teaching