Columbia subject headings:
Ballads--Europe--History and criticism.
Folklore--Europe.
Literature and folklore--Europe.
Literature, Medieval--Criticism, Textual.
Oral tradition--Europe--History.
Transmission of texts--Europe--History.
Harvard subject headings:
Literature and folklore
Oral tradition--Europe.
Romances--History and criticism.
Transmission of texts.
Princeton subject headings:
Ballads--Europe, Western--History and criticism.
Folklore--Europe, Western.
Literature and folklore--Europe, Western.
Literature, Medieval--Criticism, Textual.
Oral tradition--Europe, Western--History.
Transmission of texts--Europe, Western--History.