Columbia subject headings:
English language--Versification.
English poetry--History and criticism.
Poetics.
Unfinished books.
Harvard subject headings:
English language--Versification
English poetry--History and criticism
Poetics--History
Poetics.
Unfinished books.
Princeton subject headings:
English language--Versification.
English poetry--History and criticism.
Poetics.
Unfinished books.