Part 1 Major trends in migration in the developed world since the 1970s: trends in the United States - the counterurban-isation process - urban America since 1970; the recent shift of United States population to nonmetropolitan areas, 1970-75; a demonstration that the deconcentration of population in the United States during the 1970s was a clean break with the past; deconcentration without a "clean break"; nonmetro-politan growth in the late 1970s - the end of the turn-around?; international trends - population dispersal from major metropolitan regions - an international comparison; migration between core and peripheral regions - a description and tentative explanation of the patterns in 22 countries; recent trends in migration between core and peripheral regions in developed and advanced developing countries; "counterurbanisation", also in Europe?; migration and urban-isation in Western Europe since 1950; the reversal of the migration turnaround - resumption of traditional trends? Part 2 Major trends in migration in the less developed world since the 1970s: international trends - polarisation reversal and the spatial development process; population redistri-bution towards core areas of less developed countries, 1950-80; polarisation reversal trends - urbanisation in India - results of the 1981 census; polarisation reversal in the state of Sao Paulo, Brazil growth determinants in the core-periphery of Korea; polarisation reversal, migration related shifts in human resource profiles, and spatial growth policies - a Venezuelan study; implications of differential urbanisation on deconcentration in the Pretoria-Witwaters-rand-Vaal triangle metropolitan area, South Africa. Part 3 Long term migration trends in developed and less developed countries migration cycles: the emergence of migration cycles?; migration reversals in perspective - the long-wave evidence; development aspects of migration in third world settings - a simulation, with implications for urbanisation; a theoretical foundation for the concept of differential urbanisation; expanding the theoretical foundation of the concept of differential urbanisation; index.
