00338nam a2200157Ia 4500003000400000005001700004008004100021040000700062041000800069082001500077100001600092245003100108260002000139300000900159650001200168OSt20251203102532.0250729s1983    xx            000 0 und d  cAL  aeng  a930.7 KOCT  aKochhar S K  aTeaching of social studies  aNew Delhic1983  a352p  aHistory