Columbia subject headings:
Harvard subject headings:
Charlemagne, Emperor, 742-814--Romances.
Literature, Medieval--History and criticism
Roland (Legendary character)--In literature.
Romances--History and criticism.
Princeton subject headings:
Charlemagne, Emperor, 742-814--In literature.
Legends--History and criticism.
Literature, Medieval--History and criticism.
Roland (Legendary character) in literature.
Romances--History and criticism.