Columbia subject headings:
Harvard subject headings:
Dal Pra, Mario, 1914-1992--Congresses.
Rivista di storia della filosofia (Milan, Italy)--Congresses.
Princeton subject headings:
Dal Pra, Mario, 1914-1992--Congresses.
Philosophy--Historiography--Congresses.
Philosophy--Research--Italy--History--20th century--Congresses.
Rivista di storia della filosofia (Milan, Italy)--Congresses.