Observations on the Effects of High Environmental,, 1949 July

Observations on the Effects of High Environmental,, 1949 July, Box: 259, Folder: 11. Saint John d'El Rey Mining Company Records, 1984-12. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/346010 Accessed September 26, 2026.