TY - CHAP A1 - Oucho, J.O. A1 - Gould, W.T.S. T1 - Internal migration, urbanization, and population distribution Y1 - 1993 A3 - Foote, K.A. A3 - Hill, K.H. A3 - Martin, L.G. T2 - Demographic change in sub-Saharan Africa CY - Washington DC PB - National Academy Press SP - 256 EP - -296 ER -