Columbia subject headings:
Authors, Italian--20th century--Correspondence.
Caproni, Giorgio--Correspondence.
Luzi, Mario--Correspondence.
Poets, Italian--20th century--Correspondence.
Harvard subject headings:
Caproni, Giorgio--Correspondence.
Luzi, Mario--Correspondence.
Poets, Italian--20th century--Correspondence.
Princeton subject headings:
Caproni, Giorgio--Correspondence.
Luzi, Mario--Correspondence.
Poets, Italian--20th century--Correspondence.