Columbia subject headings:
American poetry--20th century--History and criticism.
English poetry--20th century--History and criticism.
Poetics.
Harvard subject headings:
American poetry--20th century--History and criticism
English poetry--20th century--History and criticism
Poetics.
Princeton subject headings:
American poetry--20th century--History and criticism.
English poetry--20th century--History and criticism.
Poetics.