[Geographical aspects of demographic aging in Bulgaria].
D017677:Age Distribution; D000367:Age Factors; D002031:Bulgaria; D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D005843:Geography; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012424:Rural Population; D014505:Urban Population
Age Distribution--changes; Age Factors; Bulgaria; Comparative Studies; Demographic Aging; Demographic Factors; Developed Countries; Eastern Europe; Europe; Geographic Factors; Population; Population Characteristics; Population Dynamics; Rural Population; Urban Population
Geografski aspekti v demografskoto ostaryavane na Balgariya