Population problem in third world.
D003710:Demography; D003906:Developing Countries; D004467:Economics; D005298:Fertility; D009042:Motivation; D011153:Population; D011157:Population Dynamics; D011158:Population Growth; D011640:Public Policy; D012922:Social Change; D012939:Social Planning; D012959:Socioeconomic Factors; D013672:Technology
Demographic Factors; Developing Countries; Development Planning; Development Policy; Economic Development; Economic Factors; Fertility; High Fertility Population; Motivation; Policy; Population; Population Dynamics; Population Growth; Population Growth Estimation; Population Policy; Social Change; Social Development; Social Policy; Socioeconomic Factors; Technology