[Research into natality in the Burgas district].
D002031:Bulgaria; D003710:Demography; D019049:Developed Countries; D004467:Economics; D005060:Europe; D005061:Europe, Eastern; D016656:Family Planning Policy; D005298:Fertility; D011153:Population; D011157:Population Dynamics; D011640:Public Policy; D012922:Social Change
Bulgaria; Demographic Factors; Developed Countries; Eastern Europe; Economic Factors; Europe; Fertility--changes; Policy; Population; Population Dynamics; Population Policy; Pronatalist Policy; Social Change; Social Development; Social Policy
Izsledvane na razhdaemostta v Burgaski okrag.