Columbia subject headings:
Harvard subject headings:
Don Cossacks--Poetry.
Revolutionary poetry--20th century.
Russian poetry--19th century
Russian poetry--20th century
Soviet Union--History--Revolution, 1917-1921--Poetry.
Soviet Union--History--Revolution, 1917-1921--Protest movements--Poetry.
Princeton subject headings:
Don Cossacks--Poetry.
Poetry.
Revolutionary poetry--20th century.
Russian poetry--20th century.
Soviet Union--History--Revolution, 1917-1921--Poetry.