World policies inquiry.
D003710:Demography; D019049:Developed Countries; D003906:Developing Countries; D004194:Disease; D005298:Fertility; D011153:Population; D011157:Population Dynamics; D011158:Population Growth; D011640:Public Policy
Demographic Factors; Developed Countries; Developing Countries; Diseases; Fertility; Policy; Population; Population Dynamics; Population Growth; Population Policy; Social Policy