Columbia subject headings:
Flechtheim, Ossip K. (Ossip Kurt), 1909-1998.
Futurologists--Germany--20th century--Biography.
Political scientists--Germany--20th century--Biography.
Harvard subject headings:
Flechtheim, Ossip K. (Ossip Kurt), 1909-1998
Futurologists--Germany--20th century--Biography.
Political scientists--Germany--20th century--Biography.
Princeton subject headings:
Flechtheim, Ossip K. (Ossip Kurt), 1909-1998.
Political scientists--Germany--Biography.
Socialism.