North, David S. "The Fertility of Mexican Immigrants." A proposal presented to the Center for Population Research, 1971 July 26

North, David S. "The Fertility of Mexican Immigrants." A proposal presented to the Center for Population Research, 1971 July 26, Box: 189, Folder: 1. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389507 Accessed September 27, 2026.