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Walden, Paul (1863-1957)(8)
Rothacker, Erich (1888-1965)(2)
Verlohr, Karl(2)
Brühl, Julius Wilhelm (1850-1911)(1)
Ostwald, Wolfgang (1883-1943)(1)
Pfeiffer, Paul (1875-1951)(1)
Tammann, Gustav (1861-1938)(1)