[Migration and problems related to population concentration in larger Bulgarian cities].
Kiradzhiev
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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; D011640:Public Policy; D012939:Social Planning; D014505:Urban Population
Bulgaria; Demographic Factors; Developed Countries; Development Planning; Eastern Europe; Economic Factors; Europe; Geographic Factors; Migration; Migration Policy; Policy; Population; Population Dynamics; Population Policy; Rural-urban Migration; Social Policy; Spatial Distribution; Urban Spatial Distribution--changes