Columbia subject headings:
Great Britain--In literature.
Pérez de Ayala, Ramón, 1880-1962--Knowledge--Great Britain.
Pérez de Ayala, Ramón, 1880-1962--Knowledge--United States.
United States--In literature.
Harvard subject headings:
Great Britain--In literature.
Pérez de Ayala, Ramón, 1880-1962--Knowledge--Great Britain.
Pérez de Ayala, Ramón, 1880-1962--Knowledge--United States.
United States--In literature.
Princeton subject headings:
Pérez de Ayala, Ramón, 1880-1962--Criticism and interpretation.