Columbia subject headings:
Poetry, Modern--20th century--History and criticism.
Poetry, Modern--21st century--History and criticism.
Visual poetry--History and criticism.
Harvard subject headings:
Poetry, Modern--20th century--History and criticism
Poetry, Modern--21st century--History and criticism
Visual poetry--History and criticism
Princeton subject headings:
Poetry, Modern--20th century--History and criticism.
Visual poetry--History and criticism.