Columbia subject headings:
American poetry--20th century--Bio-bibliography--Dictionaries.
American poetry--20th century--Dictionaries.
English poetry--20th century--Bio-bibliography--Dictionaries.
English poetry--20th century--Dictionaries.
Poets, American--20th century--Biography--Dictionaries.
Poets, English--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.
English poetry--20th century--Bio-bibliography--Dictionaries.
English poetry--20th century--Bio-bibliography.
English poetry--20th century--Dictionaries.
Poets, American--20th century--Biography--Dictionaries
Poets, English--20th century--Biography--Dictionaries.
Princeton subject headings:
American poetry--20th century--Bio-bibliography--Dictionaries.
American poetry--20th century--Dictionaries.
Dictionaries.
English poetry--20th century--Bio-bibliography--Dictionaries.
English poetry--20th century--Dictionaries.
Poets, American--20th century--Biography--Dictionaries.
Poets, English--20th century--Biography--Dictionaries.