Columbia subject headings:
American poetry--19th century.
American poetry--20th century.
English poetry--19th century.
English poetry--20th century.
Harvard subject headings:
American poetry--19th century
American poetry--20th century
English poetry--19th century
English poetry--20th century
Princeton subject headings:
American poetry--19th century.
American poetry--20th century.
English poetry--19th century.
English poetry--20th century.