Methodology on the Population and Demographic Statistics
PDFPrinciples and Recommendation for a Vital Statistics System, Revision 2, United Nations, New York, 2001
PDFRecommendation of European Statisticians for the 2010 Censuses of Population and Housing, UN, New York and Geneva, 2006
PDFConcise Demographic Encyclopedic Dictionary, Third edition. UNFPA, Tbilisi, 2012
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