Columbia subject headings:
Yeats, W. B. (William Butler), 1865-1939--Literary style.
Yeats, W. B. (William Butler), 1865-1939--Technique.
Harvard subject headings:
Poetics--History--20th century
Yeats, W. B. (William Butler), 1865-1939--Literary style
Yeats, W. B. (William Butler), 1865-1939--Technique.
Princeton subject headings:
Yeats, W. B. (William Butler), 1865-1939--Style.
Yeats, W. B. (William Butler), 1865-1939--Technique.