Externality, migration, and urban crises.
D003710:Demography; D004467:Economics; D004641:Emigration and Immigration; D005843:Geography; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012959:Socioeconomic Factors; D014505:Urban Population
Demographic Factors; Economic Factors; Geographic Factors; Migration; Migration, Internal; Population; Population Characteristics; Population Dynamics; Socioeconomic Factors; Spatial Distribution; Urban Population; Urban Spatial Distribution