Columbia subject headings:
Harvard subject headings:
Germany--History--To 1517--Congresses.
Germany--History--To 1517--Historiography--Congresses.
Learned institutions and societies--Germany--History--Congresses.
Monumenta Germaniae Historica (Deutsches Institut für Erforschung des Mittelalters)--History--20th century--Congresses.
Princeton subject headings:
Germany--History--To 1517--Congresses.
Germany--History--To 1517--Historiography--Congresses.
Learned institutions and societies--Germany--History--Congresses.
Monumenta Germaniae Historica (Deutsches Institut für Erforschung des Mittelalters)--History--20th century--Congresses.