Columbia subject headings:
Comparative literature.
Folk literature--History and criticism.
Literature, Ancient--History and criticism.
Literature, Medieval--History and criticism.
Oral tradition.
Harvard subject headings:
Comparative literature.
Folk literature--History and criticism
Literature, Ancient--History and criticism.
Literature, Medieval--History and criticism
Literature--History and criticism
Oral tradition.
Princeton subject headings:
Comparative literature.
Folk literature--History and criticism.
Literature, Ancient--History and criticism.
Literature, Medieval--History and criticism.
Oral tradition.