Ludwig Wittgenstein e Karl R. Popper : maestri di scuola elementare - Bartley, William Warren <1934->. (OLS)http://semarc/name/1288 (A. Armando, 1976)
Keywords: Popper, Karl Raimund <1902-1994>. (OLS)http://semarc/subject/10581; Wittgenstein, Ludwig - Pensiero pedagogico. (OLS)http://semarc/subject/29143