Columbia subject headings:
Ballads--History and criticism.
Folk songs, French--History and criticism.
Folk songs, Hungarian--History and criticism.
Harvard subject headings:
Ballads, French--History and criticism.
Ballads, Hungarian--History and criticism.
Ballads--History and criticism
Princeton subject headings:
Ballads, French--History and criticism.
Ballads--History and criticism.
Hungarian ballads and songs--History and criticism.