Columbia subject headings:
Machado, Antonio, 1875-1939--Criticism and interpretation.
Harvard subject headings:
Machado, Antonio, 1875-1939--Criticism and interpretation.
Princeton subject headings:
Castile (Spain) in literature.
Machado, Antonio, 1875-1939--Criticism and interpretation.
Machado, Antonio, 1875-1939--Knowledge--Spain.