@book{UBHD-1132619, author={Simmel, Georg}, title={Die Probleme der Geschichtsphilosophie}, subtitle={eine erkenntnistheoretische Studie}, publisher={Duncker & Humblot}, address={Leipzig}, year={1892}, pages={X, 109 S.}, language={ger}, library={UB [Signatur: B 1427-6 A]}, }