Columbia subject headings:
Harvard subject headings:
Germany--Historiography--Congresses.
Germany--History--1933-1945--Textbooks--Congresses.
National socialism--History--Congresses.
Textbooks--Germany--Congresses.
Princeton subject headings:
Germany--Historiography--Congresses.
Germany--History--1933-1945--Textbooks--Congresses.
National socialism--History--Congresses.
Textbooks--Germany--Congresses.