Robinson, J. Gregory. "Estimating the Approximate Size of the Illegal Alien Population in the United States by the Comparative Trend Analysis of Age-Specific Death Rates." Paper presented at the annual meeting of the Population Association of America, Philadelphia, 1979 April 26-28

Robinson, J. Gregory. "Estimating the Approximate Size of the Illegal Alien Population in the United States by the Comparative Trend Analysis of Age-Specific Death Rates." Paper presented at the annual meeting of the Population Association of America, Philadelphia, 1979 April 26-28, Box: 194, Folder: 7. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389691 Accessed September 27, 2026.