National Origin and the Skills of Immigrants in the Postwar Period

George J. Borjas, Immigration and the Work Force: Economic Consequences for the United States and Source Areas (University of Chicago Press, 1992), chap. 1, https://www.nber.org/books-and-chapters/immigration-and-work-force-economic-consequences-united-states-and-source-areas/national-origin-and-skills-immigrants-postwar-period.