Columbia subject headings:
Arthurian romances--History and criticism.
Arthurian romances.
Baladro del sabio Merlín.
Merlin (Legendary character)--Romances--History and criticism.
Merlin (Legendary character)--Romances.
Harvard subject headings:
Ballads, Spanish.
Spanish poetry--To 1500
Princeton subject headings:
Arthurian romances--History and criticism.
Arthurian romances.
Baladro del sabio Merlín.
Merlin (Legendary character)--Romances--History and criticism.
Merlin (Legendary character)--Romances.