Columbia subject headings:
Harvard subject headings:
Bartel, Walter--Congresses.
Historians--Germany (East)--Biography--Congresses.
Historiography--Germany (East)--Congresses.
History--Research--Germany (East)--Congresses.
History--Study and teaching--Germany (East)--Congresses.
Princeton subject headings:
Bartel, Walter--Congresses.
Germany (East)--Historiography--Congresses.
Historians--Germany, East--20th century--Congresses.
Historiography--Germany (East)--Congresses.