[A survey on the sex ratio at birth in Beijing].
Zou
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D001208:Asia; D001723:Birth Rate; D002681:China; D003710:Demography; D003906:Developing Countries; D005069:Evaluation Studies as Topic; D005191:Family Characteristics; D005202:Asia, Eastern; D005298:Fertility; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012106:Research; D012107:Research Design; D012723:Sex; D017678:Sex Distribution; D012737:Sex Factors; D012744:Sex Ratio
Asia; Birth Rate; China; Demographic Factors; Developing Countries; Eastern Asia; Evaluation; Evaluation Methodology; Family And Household; Family Characteristics; Family Size; Family Size, Ideal; Fertility; Fertility Measurements; Measurement; Population; Population Characteristics; Population Dynamics; Research Methodology; Sex Distribution; Sex Factors; Sex Preference; Sex Ratio