Columbia subject headings:
Yeats, W. B. (William Butler), 1865-1939.
Harvard subject headings:
Yeats, W. B. (William Butler), 1865-1939--Poetic works.
Princeton subject headings:
Ireland--In literature.
Poetics.
Poetry--Psychological aspects.
Self in literature.
Yeats, W. B. (William Butler), 1865-1939--Criticism and interpretation.