Columbia subject headings:
Germany--Economic conditions--1918-1945--Congresses.
Germany--Politics and government--1933-1945--Congresses.
National socialism--Congresses.
Working class--Political activity--Germany--History--20th century--Congresses.
Harvard subject headings:
Germany--Economic conditions--1918-1945--Congresses.
Germany--Politics and government--1933-1945--Congresses.
National socialism--Congresses.
Working class--Germany--Political activity--History--20th century--Congresses.
Working class--Political activity--Germany--History--20th century--Congresses.
Princeton subject headings:
Germany--Economic conditions--1918-1945--Congresses.
Germany--Politics and government--1933-1945--Congresses.
National socialism--Congresses.
Working class--Germany--Political activity--History--20th century--Congresses.