Columbia subject headings:
Villancicos (Music)--History and criticism.
Villancicos (Poetry)--History and criticism.
Harvard subject headings:
Bibliographies
Christmas music--Portugal--History and criticism--Congresses.
Christmas music--Spain--History and criticism--Congresses.
Church music--Portugal--Congresses.
Church music--Spain--Congresses.
Spanish literature--Classical period, 1500-1700--History and criticism--Congresses
Villancicos (Music)--Portugal--History and criticism--Congresses.
Villancicos (Music)--Spain--History and criticism--Congresses.
Princeton subject headings:
Villancicos (Music)--History and criticism.
Villancicos (Poetry)--History and criticism.