http://library.bids.org.bd/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3ABangladesh%20Bureau%20of%20Educational%20Information%20%20and%20location%3ARS&format=rss2 3 0 500 ISBN http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=19810 Dhaka : Bangladesh Bureau of Educational Information & Statistics (BANBEIS) , 2006 . xxxv, 161p. : 32 cm. .

]]> http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=19810 ISBN http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=19642 Dhaka : Bangladesh Bureau of Educational Information and Statistics (BANBEIS) , 2008 . 64p. : 20 cm. .

]]> http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=19642 ISBN http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=19304 Dhaka : Bangladesh Bureau of Educational Information and Statistics (BANBEIS) , 2006 . Series : 15 cm. .

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