Columbia subject headings:
Germany--Politics and government--1918-1933--Congresses.
Germany--Politics and government--1933-1945--Congresses.
Kommunistische Partei Deutschlands--History--Congresses.
Sozialistische Einheitspartei Deutschlands--Congresses.
Thälmann, Ernst, 1886-1944--Congresses.
Harvard subject headings:
Germany--Politics and government--1918-1933--Congresses.
Germany--Politics and government--1933-1945--Congresses.
Kommunistische Partei Deutschlands--History--Congresses.
Sozialistische Einheitspartei Deutschlands--Congresses.
Thälmann, Ernst, 1886-1944--Congresses.
Princeton subject headings:
Germany--Politics and government--1918-1933.
Germany--Politics and government--1933-1945.
Kommunistische Partei Deutschlands.