Columbia subject headings:
Harvard subject headings:
Civilization, Medieval, in literature.
French language--To 1300--Versification.
French poetry--To 1500--History and criticism
Refrain.
Songs, Old French--History and criticism.
Trouvères.
Princeton subject headings:
French language--To 1300--Versification.
French poetry--To 1500--History and criticism.
Refrain.
Trouvères.