00285nam a2200109Ia 450000500170000000800410001708200150005810000200007324500310009326000430012430000080016720260224041018.0260224s9999||||xx |||||||||||||| ||und||  a301.35 KOC  aKochhar, S.K.   0aTeaching of social studies  aNew York: Apt Books, distributorc1989  a352