title: "Population explosion" still not over, says demographer.
mesh_terms: D003710:Demography; D019049:Developed Countries; D003906:Developing Countries; D011153:Population; D011156:Population Density; D011157:Population Dynamics; D011158:Population Growth
keywords: Demographic Factors; Developed Countries; Developing Countries; Population; Population Dynamics; Population Growth; Population Size; World