Requena B., Mariano. "Chilean Programme of Abortion Control and Fertility Planning: Present Situation and Forecast for the Next Decade", circa 1967

Requena B., Mariano. "Chilean Programme of Abortion Control and Fertility Planning: Present Situation and Forecast for the Next Decade", circa 1967, Box: 193, Folder: 15. Julian Samora Papers, 24426265. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/389669 Accessed September 27, 2026.