Columbia subject headings:
German poetry--20th century--History and criticism.
German poetry--21st century--History and criticism.
Russian poetry--20th century--History and criticism.
Russian poetry--21st century--History and criticism.
Harvard subject headings:
German poetry--20th century--History and criticism--Congresses.
German poetry--21st century--History and criticism--Congresses.
Russian poetry--20th century--History and criticism--Congresses.
Russian poetry--21st century--History and criticism--Congresses.
Princeton subject headings:
German poetry--20th century--History and criticism.
German poetry--21st century--History and criticism.
Russian poetry--20th century--History and criticism.
Russian poetry--21st century--History and criticism.