Columbia subject headings:
Harvard subject headings:
Authors, Italian--20th century--Correspondence
Guerrini, Adriano--Correspondence.
Sbarbaro, Camillo, 1888-1967--Correspondence.
Princeton subject headings:
Authors, Italian--20th century--Correspondence.
Guerrini, Adriano--Correspondence.
Sbarbaro, Camillo, 1888-1967--Correspondence.