Irregular migration: an international perspective.
D003710:Demography; D004467:Economics; D004641:Emigration and Immigration; D011153:Population; D011157:Population Dynamics; D011640:Public Policy; D014171:Transients and Migrants
Demographic Factors; Economic Factors; Illegal Migrants; International Migration; Macroeconomic Factors; Migrants; Migration; Migration Policy; Policy; Population; Population Dynamics; Population Policy; Social Policy