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
"ST/ESA/SER.A/121"--T.p. verso
GDB910
Rural-urban migration
307.76 / Wo