Columbia subject headings:
Ballads, Spanish--Texts.
Folk songs, Spanish.
Spanish poetry--To 1500--History and criticism.
Spanish poetry--To 1500.
Harvard subject headings:
Ballads, Spanish--Texts.
Folk songs, Spanish--Texts.
Spanish poetry--To 1500
Spanish poetry--To 1500--History and criticism
Princeton subject headings:
Ballads, Spanish--Texts.
Folk songs, Spanish.
Spanish poetry--To 1500--History and criticism.
Spanish poetry--To 1500.