RT Book T1 Die Ostkirchen A1 Heiler, Friedrich 1892-1967 A2 Heiler, Anne Marie 1889-1979 A2 Hartog, Hans LA German LA Ancient Greek PP München Basel PB E. Reinhardt YR 1971 UL https://ixtheo.de/Record/021805253 SN 3497004278 K1 Orthodox Eastern Church K1 Eastern Churches