@book{UBHD-1148500, author={Joan <Bălgarski>}, publisher={Akad. Druck- u. Verl.-Anst.}, address={Graz}, year={1975}, pages={IX, 515 S.}, language={chu and ger}, library={UB [Signatur: G 2538-5::7] ; SL [Signatur: <SL> DCM 14.30::7]}, }