A review of five recent books indicates that the migration of labor remains, on balance, a dynamic force for human betterment and economic prosperity. (Author)

The United States is a highly urbanized nation with space in abundance, yet large portions of its national territory are emptying out. The counterpart of this pervasive population decline is a highly selective pattern of growth, conferred by a national system of migration flows that has increasingly favored a certain few metropolitan areas. This…

In attempts to forestall problems inherent in too-rapid urbanization, China has instituted a migration policy designed to strictly control changes in permanent residence from rural areas or small urban places to larger cities and to encourage the development of small cities and towns. The policy is enforced through the household registration…

Three issues are discussed in the beginning of this paper: general trends of urban population growth among blacks since 1930, regional variations in growth and distribution from 1950 to 1970, and urban growth and metropolitanization. The remainder of the paper examines the growth of the black urban population by size of place from 1950 to 1970.…

This handbook offers information on population dynamics. The population data resource is intended for use by journalists, policymakers, teachers, high school and college students, libraries, advertising agencies, and family planning groups. The document is presented in 12 sections. Section I introduces demography, explains the purpose and scope of…