Columbia subject headings:
Harvard subject headings:
Pea, Enrico, 1881-1958--Congresses.
Princeton subject headings:
Alexandria (Egypt)--Intellectual life--Congresses.
Pea, Enrico, 1881-1958--Congresses.
Pea, Enrico, 1881-1958--Homes and haunts--Egypt--Alexandria--Congresses.
Pea, Enrico, 1881-1958--Homes and haunts--Italy--Versilia Plain--Congresses.
Versilia Plain (Italy)--Intellectual life--Congresses.