Columbia subject headings:
Dramatic music--Spain--20th century--History and criticism.
Martínez Sierra, María, 1874-1974--Criticism and interpretation.
Theater--Spain--History--20th century.
Harvard subject headings:
Dramatic music--Spain--20th century--History and criticism.
Martínez Sierra, María, 1874-1974--Criticism and interpretation.
Theater--Spain--History--20th century.
Princeton subject headings:
Dramatic music--Spain--20th century--History and criticism.
Martínez Sierra, María, 1874-1974--Criticism and interpretation.
Theater--Spain--History--20th century.