[Statistical materials:  natural increase of population in the USSR].
D001723:Birth Rate; D003710:Demography; D019049:Developed Countries; D006079:Government Publications as Topic; D008393:Marriage; D009026:Mortality; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011158:Population Growth; D012106:Research; D013223:Statistics as Topic; D014586:USSR
Birth Rate; Demographic Factors; Developed Countries; Government Publication; Marriage Patterns; Mortality; Natural Increase--statistics; Population; Population Characteristics--statistics; Population Dynamics--statistics; Population Growth; Population Statistics; Research Methodology; Tables And Charts; Ussr