title: [Studying ethnic structure using censuses in Bulgaria].
authors.forename: D
authors.initials: D
authors.lastname: Arkadiev
mesh_terms: D002031:Bulgaria; D019352:Censuses; D003469:Culture; D003710:Demography; D019049:Developed Countries; D005006:Ethnicity; D005060:Europe; D005061:Europe, Eastern; D011153:Population; D011154:Population Characteristics; D012106:Research
keywords: Bulgaria; Census; Cultural Background; Demographic Factors; Developed Countries; Eastern Europe; Ethnic Groups; Europe; Historical Survey; Population; Population Characteristics; Population Statistics; Research Methodology