World urbanization prospects 1990 : estimates and projections of urban and rural populations and of urban agglomerations /
United Nations.Department of International Economic and Social Affairs.
New York : United Nations,
1991.
"ST/ESA/SER.A/121."
"United Nations publication sales no. E.91.XII.11"--T.p. verso.
Earlier eds. have title: Prospects of world urbanization.
Includes bibliographical references (p. 34).
Urbanization