[Live birth rate, mortality, and abortion rate in 1975-1980 and 12-month sliding averages].
D003604:Czechoslovakia; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D006079:Government Publications as Topic; D011154:Population Characteristics; D012106:Research
Czechoslovakia; Developed Countries; Eastern Europe; Europe; Government Publication; Population Statistics; Research Methodology