Columbia subject headings:
Classical literature.
Petrarca, Francesco, 1304-1374--Criticism and interpretation.
Petrarca, Francesco, 1304-1374--Knowledge and learning.
Harvard subject headings:
Petrarca, Francesco, 1304-1374--Books and reading.
Petrarca, Francesco, 1304-1374--Criticism and interpretation.
Petrarca, Francesco, 1304-1374--Knowledge--Classical literature.
Princeton subject headings:
Petrarca, Francesco, 1304-1374--Books and reading.
Petrarca, Francesco, 1304-1374--Criticism and interpretation.
Petrarca, Francesco, 1304-1374--Knowledge--Classical literature.