Labirinto romano - De Mattei, Rodolfo. (OLS)http://semarc/name/6912 (Vallecchi, 1954)
Keywords: Roma - Aneddoti. (OLS)http://semarc/subject/31241

Karl Marx - Korsch, Karl. (OLS)http://semarc/name/34761; Illuminati, Augusto. (OLS)http://semarc/name/34762; Bedeschi, Giuseppe, <1939- >. (OLS)http://semarc/name/20884 (Laterza, 1969)
Keywords: Marx, Karl <1818-1883>. (OLS)http://semarc/subject/3189; Marxismo. (OLS)http://semarc/subject/494