Columbia subject headings:
Croce, Benedetto, 1866-1952--Congresses.
Dewey, John, 1859-1952--Congresses.
Harvard subject headings:
Croce, Benedetto, 1866-1952
Dewey, John, 1859-1952
Philosophers, Modern.
Philosophy--History--20th century.
Princeton subject headings:
Croce, Benedetto, 1866-1952--Congresses.
Dewey, John, 1859-1952--Congresses.