[Trends in the sex ratio at birth in selected Western countries].
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D000367:Age Factors; D001315:Australia; D001695:Biology; D001722:Birth Order; D002170:Canada; D003469:Culture; D003710:Demography; D019049:Developed Countries; D005006:Ethnicity; D005060:Europe; D005191:Family Characteristics; D005195:Family Relations; D007843:Latin America; D011057:Politics; D011153:Population; D011154:Population Characteristics; D017678:Sex Distribution; D012737:Sex Factors; D012744:Sex Ratio; D012942:Social Sciences; D014481:United States
Age Factors; Australia; Biological Characteristics; Biology; Birth Order; Canada; Cultural Background; Demographic Factors; Demography; Developed Countries; Ethnic Groups; Family And Household; Family Characteristics; Family Relationships; Historical Demography; Historical Survey; Latin America; Political Factors; Population; Population Characteristics; Research Report; Sex Distribution; Sex Factors; Sex Ratio--changes; Social Sciences; United States; Western Europe