http://library.bids.org.bd/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Ahn%2C%20Choong%20Yong%22&format=rss2 2 0 500 ISBN http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=35146 By Singh, Inderjit. Ohio : Ohio State University, Department of Agricultural Economics & Rural Sociology , 1972 . ii, 45p. : 27 cm. .

]]> http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=35146 ISBN http://library.bids.org.bd/cgi-bin/koha/opac-detail.pl?biblionumber=35246 By Ahn, Choong Yong. Columbus : Ohio State University, Department of Agricultural Economics and Rural Sociology , 1972 . 38p. : 24 cm. .

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