[Multiple births in Czechoslovakia and international comparison].
Vavrova
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D001695:Biology; D001723:Birth Rate; D003604:Czechoslovakia; D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D005298:Fertility; D005313:Fetal Death; D005823:Genetics; D005828:Genetics, Population; D007226:Infant Mortality; D009026:Mortality; D011153:Population; D011157:Population Dynamics
Biology; Birth Rate--changes; Czechoslovakia; Demographic Factors; Developed Countries; Eastern Europe; Europe; Fertility; Fertility Measurements; Fetal Death; Genetics; Genetics, Population; Infant Mortality; Mortality; Population; Population Dynamics