Cardenas, Leonard. "Trends and Problems of Urbanization in the United States-Mexico Border Area." Presented at the Conference on Urbanization in the United States-Mexico Border Region, University of Texas at El Paso, 1968 June 14-15

Cardenas, Leonard. "Trends and Problems of Urbanization in the United States-Mexico Border Area." Presented at the Conference on Urbanization in the United States-Mexico Border Region, University of Texas at El Paso, 1968 June 14-15, Box: 160, Folder: 6. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/388777 Accessed September 27, 2026.