Columbia subject headings:
Pérez Galdós, Benito, 1843-1920--Bibliography.
Pérez Galdós, Benito, 1843-1920--Criticism, Textual.
Harvard subject headings:
Pérez Galdós, Benito, 1843-1920--Bibliography.
Pérez Galdós, Benito, 1843-1920--Criticism, Textual.
Princeton subject headings:
Pérez Galdós, Benito, 1843-1920--Criticism and interpretation.