Aspects of Mexico's economic and technological structures are examined, features of the modernization process are dealt with, an analysis is made of one component of the Mexican migratory flow into the United States, and migratory flow, seen in the context of the system of "peripheral" and "central" economics, is discussed. (Author/EB)

Examines principal demographic determinants of recent Cuban emigration and discusses how these demographic variables interact with other social, economic, and political determinants. Suggests that Cuban labor migration is more responsive to demographic factors than some theorists assume. (Author/MJL)