Columbia subject headings:
Babbitt, Irving, 1865-1933.
Humanism--History--20th century.
Philosophy and religion.
Harvard subject headings:
Babbitt, Irving, 1865-1933
Humanism--History--20th century.
Philosophy and religion.
Princeton subject headings:
Babbitt, Irving, 1865-1933.
Humanism--History--20th century.
Philosophy and religion.