Columbia subject headings:
Ethics--Germany (West)--History--20th century--Congresses.
Philosophy, German--20th century--Congresses.
Harvard subject headings:
Ethics--Germany--History--20th century--Congresses.
Philosophy, German--20th century--Congresses.
Princeton subject headings:
Ethics, Modern--20th century.
National socialism--Germany--History.
Nationalism--Germany (West)
Philosophy, German--20th century.