Petri Hispani Summulae logicales - Ioannes XXI, <papa, ca. 1210-1277>. (OLS)http://semarc/name/33951; Bocheński, Józef Maria, <op, 1902-1995>. (OLS)http://semarc/name/2687 (Marietti, 1947)
Keywords: Logica - Medioevo. (OLS)http://semarc/subject/1107