Columbia subject headings:
Petrarca, Francesco, 1304-1374--Correspondence.
Petrarca, Francesco, 1304-1374--Criticism and interpretation.
Harvard subject headings:
Petrarca, Francesco, 1304-1374
Petrarca, Francesco, 1304-1374--Criticism and interpretation.
Petrarca, Francesco, 1304-1374. Correspondence
Petrarca, Francesco, 1304-1374. Correspondence--Criticism and interpretation.
Princeton subject headings:
Petrarca, Francesco, 1304-1374--Criticism and interpretation.
Petrarca, Francesco, 1304-1374. Correspondence.