Irregular migration:  a rising issue in developing countries.
Lohrmann
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D003710:Demography; D003906:Developing Countries; D004641:Emigration and Immigration; D005843:Geography; D011057:Politics; D011153:Population; D011157:Population Dynamics; D012959:Socioeconomic Factors; D014171:Transients and Migrants
Comparative Studies; Demographic Factors; Destination; Developing Countries; Geographic Factors; Illegal Migrants; International Migration; Migrants; Migration; Origin; Political Factors; Population; Population Dynamics; Socioeconomic Factors