[Trends and features of the development of migratory processes in Bulgaria].
Kalchev
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D002031:Bulgaria; D003710:Demography; D019049:Developed Countries; D004467:Economics; D004641:Emigration and Immigration; D005060:Europe; D005061:Europe, Eastern; D005843:Geography; D011153:Population; D011157:Population Dynamics; D012959:Socioeconomic Factors
Bulgaria; Demographic Factors; Developed Countries; Eastern Europe; Economic Conditions; Economic Factors; Europe; Geographic Factors; Macroeconomic Factors; Migration; Migration, Internal; Population; Population Dynamics; Socioeconomic Factors; Spatial Distribution