[Demographic development trends in Bulgaria:  will the 10 million limit be passed by 1990?].
D002031:Bulgaria; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D005544:Forecasting; D012106:Research; D013223:Statistics as Topic
Bulgaria; Developed Countries; Eastern Europe; Estimation Technics; Europe; Population Forecast; Population Projection; Research Methodology
Demographische Entwicklungstendenzen in Bulgarien:  wird die 10-Millionengrenze bis 1990 uberschritten?