[The age composition of the urban population of China:  its changes and trends].
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D017677:Age Distribution; D000367:Age Factors; D001208:Asia; D002681:China; D003710:Demography; D003906:Developing Countries; D005202:Asia, Eastern; D005544:Forecasting; D011153:Population; D011154:Population Characteristics; D012106:Research; D012939:Social Planning; D013223:Statistics as Topic; D014505:Urban Population
Age Distribution--changes; Age Factors; Asia; China; Demographic Factors; Developing Countries; Development Planning; Eastern Asia; Estimation Technics; Population; Population Characteristics; Population Projection; Research Methodology; Urban Population--changes