Columbia subject headings:
Dante Alighieri, 1265-1321.
Mallarmé, Stéphane, 1842-1898.
Valéry, Paul, 1871-1945.
Harvard subject headings:
Dante Alighieri, 1265-1321
Mallarmé, Stéphane, 1842-1898
Valéry, Paul, 1871-1945
Princeton subject headings: