[Statistical surveys].
D003604:Czechoslovakia; D003625:Data Collection; D003710:Demography; D019049:Developed Countries; D005006:Ethnicity; D005060:Europe; D005061:Europe, Eastern; D006079:Government Publications as Topic; D011153:Population; D011157:Population Dynamics; D011158:Population Growth; D012106:Research; D012494:Sampling Studies; D013223:Statistics as Topic
Czechoslovakia; Demographic Factors; Developed Countries; Eastern Europe; Ethnic Groups; Europe; Government Publication; Natural Increase; Population; Population Dynamics--statistics; Research Methodology; Sampling Studies; Statistics; Studies; Surveys; Tables And Charts