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The sex and age distribution of the world populations
Vereinte Nationen / Department of Economic and Social … - New York, NY : United Nations - 1992(1993); 1994; 1996(1997)
Persistent link: https://www.econbiz.de/10000505073
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Global population policy database
Vereinte Nationen / Department of Economic and Social … - New York, NY : United Nations - 1987; 1989(1990) - 1999(2000); damit Ersch. eingest.
Persistent link: https://www.econbiz.de/10001615492