Columbia subject headings:
Music-halls (Variety-theaters, cabarets, etc.)--Spain--History--20th century.
Revues--Spain--History and criticism.
Harvard subject headings:
Music-halls (Variety-theaters, cabarets, etc.)--Spain--History--20th century.
Princeton subject headings:
Music-halls (Variety-theaters, cabarets, etc.)--Spain--History--20th century.
Musicals--Spain--History and criticism.
Revues--Spain--History and criticism.