World urbanization prospects 1990 :

World urbanization prospects 1990 : estimates and projections of urban and rural populations and of urban agglomerations / Department of International Economic and Social Affairs. - New York : United Nations, 1991. - viii, 223 p. :

"ST/ESA/SER.A/121"--T.p. verso

GDB910


Rural-urban migration

307.76 / Wo
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