Columbia subject headings:
Dante Alighieri, 1265-1321--Anecdotes.
Dante Alighieri, 1265-1321--Knowledge and learning.
Mathematics.
Numeration, Arabic.
Harvard subject headings:
Dante Alighieri, 1265-1321--Anecdotes.
Dante Alighieri, 1265-1321--Knowledge--Mathematics.
Numeration, Arabic.
Princeton subject headings:
Anecdotes.
Dante Alighieri, 1265-1321--Anecdotes.
Dante Alighieri, 1265-1321--Knowledge--Mathematics.
Numeration, Arabic.