Columbia subject headings:
Harvard subject headings:
Adler, Max, 1873-1937
Austria--Politics and government--20th century.
Austro-Marxist school--History--20th century.
Bauer, Otto, 1881-1938.
Socialism--Austria--History--20th century
Princeton subject headings:
Adler, Max, 1873-1937.
Austria--Politics and government--1918-1938.
Bauer, Otto, 1881-1938.
Communism--Austria--History--20th century.