Columbia subject headings:
Harvard subject headings:
Historiography--Germany--History--Congresses.
Historiography--History--20th century--Congresses.
Historiography--History--21st century--Congresses.
Historiography--Political aspects--Germany--Congresses.
Princeton subject headings:
Historiography--Germany--History--Congresses.
Historiography--History--20th century--Congresses.
Historiography--History--21st century--Congresses.
Historiography--Political aspects--Germany--Congresses.