References
^ United Nations. Dept. of Economic and Social Affairs (2012). 9789210510912, United Nations Publications, 2002. ISBN 9789210510912 (revised Mar 2014)^ Demographic Yearbook, 2000 Vol. 52 by Department of Economic and Social Affairs Staff United Nations (2003, Hardcover, Revised) ISBN 9789210510912 (revised Sep 2018)
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