Philosophical Society of Turkey conference program, list of participants, "Ethical Knowledge and Social Facts", 1989

Philosophical Society of Turkey conference program, list of participants, "Ethical Knowledge and Social Facts", 1989, Box: 26, Folder: 14. Personal papers of Richard T. De George, PP 531. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/316109 Accessed March 03, 2026.