Act on travel passes, 11 May 1989.
D002031:Bulgaria; D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D005843:Geography; D007878:Legislation as Topic; D008004:Licensure; D011153:Population; D011157:Population Dynamics; D011996:Records; D012111:Residence Characteristics
Bulgaria; Developed Countries; Eastern Europe; Europe; Geographic Factors; Laws And Statutes; Legislation; Permits; Population; Residence Characteristics; Residential Mobility; Spatial Distribution; Travel Documents