Columbia subject headings:
Mysticism in literature.
Yeats, W. B. (William Butler), 1865-1939. Vision.
Harvard subject headings:
Mysticism in literature.
Yeats, W. B. (William Butler), 1865-1939. Vision
Princeton subject headings:
Mysticism in literature.
Yeats, W. B. (William Butler), 1865-1939. Vision.