Columbia subject headings:
Communists--Germany--Biography.
Germany--Politics and government--1918-1933.
Levi, Paul, 1883-1930.
Luxemburg, Rosa, 1871-1919.
Socialists--Germany--Biography.
Unabhängige Sozialdemokratische Partei Deutschlands.
Harvard subject headings:
Communists--Germany--Biography
Germany--Politics and government--1918-1933
Levi, Paul, 1883-1930
Luxemburg, Rosa, 1871-1919
Socialists--Germany--Biography
Unabhängige Sozialdemokratische Partei Deutschlands
Princeton subject headings:
Communists--Germany--Biography.
Germany--Politics and government--1918-1933.
Levi, Paul, 1883-1930.
Luxemburg, Rosa, 1871-1919.
Socialists--Germany--Biography.
Unabhängige Sozialdemokratische Partei Deutschlands.