[Reversible labor migrations in Bulgaria--development, evaluation, and problems].
Michev
N
N
Dimitrov
E
E
D001519:Behavior; D002031:Bulgaria; D003710:Demography; D019049:Developed Countries; D004641:Emigration and Immigration; D005060:Europe; D005061:Europe, Eastern; D011153:Population; D011157:Population Dynamics; D014171:Transients and Migrants; D014186:Transportation
Behavior; Bulgaria; Commuting; Demographic Factors; Developed Countries; Eastern Europe; Europe; Historical Survey; Labor Migration; Migration; Population; Population Dynamics; Temporary Migration