Columbia subject headings:
American poetry--20th century--History and criticism.
Poets, American--20th century--Biography--Dictionaries.
Harvard subject headings:
American poetry--20th century--Bio-bibliography--Dictionaries
American poetry--20th century--Bio-bibliography.
American poetry--20th century--Dictionaries.
American poetry--20th century--History and criticism
Poets, American--20th century--Biography
Poets, American--20th century--Biography--Dictionaries
Reference works.
Princeton subject headings:
American poetry--20th century--Bio-bibliography.
American poetry--20th century--History and criticism.
Poets, American--20th century--Biography.