Columbia subject headings:
Church--Catholicity--Congresses.
Councils and synods, Ecumenical--Congresses.
Harvard subject headings:
Biserica Ortodoxă Română--Relations--Evangelische Kirche in Deutschland--Congresses.
Church--Unity--Congresses.
Councils and synods, Ecumenical--Congresses.
Evangelische Kirche in Deutschland--Relations--Biserica Ortodoxă Română--Congresses.
Rumänisch-Orthodoxe Kirche.
Princeton subject headings: