Columbia subject headings:
Croce, Benedetto, 1866-1952--Congresses.
Liberalism--Philosophy--Congresses.
Harvard subject headings:
Croce, Benedetto, 1866-1952--Congresses.
Croce, Benedetto, 1866-1952--Contributions in political science--Congresses.
Liberalism--Congresses
Liberalism--Philosophy--Congresses.
Political science--Philosophy--Congresses
Princeton subject headings:
Croce, Benedetto, 1866-1952--Contributions in political science--Congresses.
Liberalism--Congresses.