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Population movements : the contribution of demography to the study of social problems
Kuczynski, Robert R. - In: Human problems in British Central Africa 2 (1944), pp. 16-34
Persistent link: https://www.econbiz.de/10002345895
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Fertility and reproduction : methods of measuring the balance of births and deaths
Kuczynski, Robert René - 1982
Persistent link: https://www.econbiz.de/10013381274