DEELY, John. Four Ages of Understanding the first postmodern survey of philosophy from ancient times to the turn of the twenty-first century - Toronto University of Toronto Press 2001 - xxxiii, 1019p. - Toronto Studies in Semiotics. . ISBN: �9781442613010 Subjects--Topical Terms: Philosophy--History. 2. Semiotics--History. 3. Postmodernism. Dewey Class. No.: 190 / DEE-F