[Statistical surveys].
D000028:Abortion, Induced; D017677:Age Distribution; D001723:Birth Rate; D003604:Czechoslovakia; D003710:Demography; D019049:Developed Countries; D004641:Emigration and Immigration; D004651:Employment; D005006:Ethnicity; D005060:Europe; D005061:Europe, Eastern; D006079:Government Publications as Topic; D008393:Marriage; D009026:Mortality; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012106:Research; D014798:Vital Statistics
Abortion, Induced; Age Distribution; Birth Rate; Czechoslovakia; Demographic Factors; Developed Countries; Eastern Europe; Employment Status; Ethnic Groups; Europe; Government Publication; Marriage Patterns; Migration; Mortality; Population; Population Dynamics--statistics; Population Statistics; Research Methodology; Vital Statistics