Columbia subject headings:
Germany--History--To 1517--Sources--Congresses.
Middle Ages--Historiography--Congresses.
Monumenta Germaniae historica--Congresses.
Harvard subject headings:
Germany--History--To 1517--Sources--Congresses.
Middle Ages--Historiography--Congresses
Monumenta Germaniae Historica--Congresses.
Monumenta Germaniae historica--Congresses.
Princeton subject headings:
Germany--History--To 1517--Sources--Congresses.
Middle Ages--Historiography--Congresses.
Monumenta Germaniae historica--Congresses.