Title: Die Konzile des 13.-15. Jahrhunderts und die ökumenische Frage
Subjects: Council of Florence (1438-1445), Lateran Council (4th : 1215), Lateran Council (4th : 1215 : Palazzo Lateranense), Council of Florence (1438-1445 : Florence, Italy), Schism, Eastern and Western Church, Relations, Catholic Church, Orthodox Eastern Church, Oriental rites, History, Ecumenical Councils and synods, Eglise catholique, Conciles et synodes œcuméniques, Histoire, Eglise orthodoxe