00390cam a2200157ua 45000010005000000080039000050400009000440820010000531000024000632450044000872500009001312600033001403000014001736530014001876530031002012338110811n        ii  |||gr||||Z||||||eng  cMAIN  a371.3  aSingh, T.,eAuthor.1 aTeaching of social studiescby T. Singh  a1st.  aAmritsar:bKrishna Brothers.  a168p:9cm.  aEducation  aTeaching of social studies