Summa logicae - Guillelmus : de Occam <ofm ; 1290-1350>. (OLS)http://semarc/name/89160; Boehner, Philotheus <OFM>. (OLS)http://semarc/name/13265 (Franciscan Institute publications Text series, 1951)
Keywords: Logica - Filosofia. (OLS)http://semarc/subject/2012