Die Geistesströmungen der Gegenwart - Hessen, Johannes <1889->. (OLS)http://semarc/name/33354 (Herder & Co.,, 1937)
Keywords: Filosofia e scienza. (OLS)http://semarc/subject/5794; Filosofia moderna. (OLS)http://semarc/subject/7841; Filosofia - Sec. 20. (OLS)http://semarc/subject/1369