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Briggs, Vernon M. Jr. – International Migration Review, 1984
Existing data on illegal immigration in the U.S. is inadequate. The limited availability of macrodata on the size of the annual flows and of the accumulated stock of individuals as well as of microdata on their influence on selected labor markets has been used to forestall policy reform efforts. (Author/RDN)
Descriptors: Data Analysis, Data Collection, Employment Patterns, Mexicans

Gregory, James N. – Journal of American History, 1995
Advocates greater use of the Public Use Microdata Samples (PUMS), computer readable samples of individual and household records from the manuscript census schedules. An analysis of southern migration during and after World War II reveals the wealth of material in PUMS and the many ways it can be used. (MJP)
Descriptors: Archives, Blacks, Census Figures, Data Collection