Columbia subject headings:
Harvard subject headings:
Petrarca, Francesco, 1304-1374--Influence.
Ungaretti, Giuseppe, 1888-1970--Criticism and interpretation.
Princeton subject headings:
Petrarca, Francesco, 1304-1374--Criticism and interpretation.
Petrarca, Francesco, 1304-1374--Influence.
Ungaretti, Giuseppe, 1888-1970--Criticism and interpretation.
Ungaretti, Giuseppe, 1888-1970--Symbolism.