Columbia subject headings:
Bloch, Ernst, 1885-1977.
Socialism--Germany--History.
Utopias--History.
Harvard subject headings:
Bloch, Ernst, 1885-1977
Socialism--Germany
Socialism--Germany--History
Utopias--History
Princeton subject headings:
Bloch, Ernst, 1885-1977--Political science.
Bloch, Ernst, 1885-1977.