New York : Dept. of Economic and Social Development, Statistical Division, United Nations, 2002 . v. ; , vol. 56, no.1-4, 6-8 (January-April, June-August 2002) -- vol. 57, no.2-4,11-12 (February-April, Nov.-Dec. 2003) -- vol. 58, no.3,5 (March,May 2004) -- vol. 59, no.5-9, 11-12 (May- Sep, Nov-Dec. 2005) -- vol. 60, no.1-2, 4-7, 10-12 (Jen-Feb, April-July, Oct-Dec 2006) -- vol. 61, no.1-2, 8-12 (Jen-Feb, Aug-Dec 2007) -- vol. 62, no.1-6, 8-12 (Jen-June, Aug-Dec 2008) -- vol. 63, no.1-2,7, 9-12 (Jen-Feb, July, Sep-Dec 2009) -- vol. 64, no.1-8 (Jen-Dec 2010) -- vol. 65, no.1-5, 7-10, 12(Jen-Oct,Dec 2011) -- vol. 66, no.2 (Feb 2012) 28 cm. .

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