title: [The process of aging in the Bulgarian population].
mesh_terms: D017677:Age Distribution; D000367:Age Factors; D002031:Bulgaria; D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D005544:Forecasting; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012106:Research; D013223:Statistics as Topic
keywords: Age Distribution--changes; Age Factors; Bulgaria; Comparative Studies; Demographic Aging; Demographic Factors; Developed Countries; Eastern Europe; Estimation Technics; Europe; Historical Survey; Population; Population Characteristics; Population Dynamics; Population Projection; Research Methodology
vernacular_title: Protsesat na ostaryavane na naselenieto na Balgariya