Columbia subject headings:
American poetry--20th century--History and criticism.
American poetry--Periodicals--Handbooks, manuals, etc.
Harvard subject headings:
American poetry--20th century--History and criticism
American poetry--Periodicals--Handbooks, manuals, etc.
Princeton subject headings:
American poetry--20th century--History and criticism.
American poetry--Periodicals--Handbooks, manuals, etc.