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World population
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Fertility and reproduction
Families and households
Mobility, migration and foreigners
Health and mortality
Individual and population ageing, age structure
Environment and development
Education, work, economy (socio-economic differences)
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Education • work • economy
Environment • development
Families • households
Fertility • reproduction
Gender issues
Health • mortality
population ageing • age structure
Mobility • migration • foreigners
Figure-1.-Sex-ratios-at-birth-and-at-prime-marriageable-ages-in-China-1982–2019-1-1
