Columbia subject headings:
Dante Alighieri, 1265-1321--Criticism and interpretation.
Gmelin, Hermann, 1900-1958.
Harvard subject headings:
Dante Alighieri, 1265-1321--Criticism and interpretation.
Gmelin, Hermann, 1900-1958.
Princeton subject headings:
Dante Alighieri, 1265-1321--Criticism and interpretation.
Gmelin, Hermann, 1900-1958.