Statistical materials. Part 4: natural increase of population in the USSR

Data are presented on the natural increase of the population in the USSR. Data for 1982-1983 are included on birth, death, and natural increase rates; births, deaths, and marriages by month; age-specific birth rates by urban or rural area and by Union Republic; deaths due to circulatory disease or cancer; marriage by age; and divorces by marriage duration and age of husband and wife.