[Quality of the population:  essence, content, criteria (an attempt at methodological analysis)].
Medkov
V
V
D001695:Biology; D002031:Bulgaria; D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D005823:Genetics; D005828:Genetics, Population; D011153:Population; D011154:Population Characteristics; D012106:Research
Biology; Bulgaria; Demographic Factors; Developed Countries; Eastern Europe; Europe; Genetics; Genetics, Population; Population; Population Characteristics; Research Methodology