L'aborto - Brautigan, Richard. (OLS)http://semarc/name/33341; Paolini, Pier Francesco. (OLS)http://semarc/name/17976 (Rizzoli, 1976)

La monadologia - Leibniz, Gottfried Wilhelm, <1646-1716>. (OLS)http://semarc/name/3338; De Ruggiero, Guido, <1888-1948>. (OLS)http://semarc/name/3864 (Laterza, 1971)
Keywords: Leibniz, Gottfried Wilhelm : von <1646-1716> . Monadologie. (OLS)http://semarc/subject/57206