Columbia subject headings:
Harvard subject headings:
Anarchism--Spain--History--20th century
Anarchism--Ukraine--History--20th century.
Makhno, Nestor Ivanovich, 1889-1934
Spain--History--Civil War, 1936-1939.
Ukraine--History--Revolution, 1917-1921.
Princeton subject headings:
Anarchism--Spain--History--20th century.
Anarchism--Ukraine--History--20th century.
Labor unions--Spain--Political activity--History--20th century.
Makhno, Nestor Ivanovich, 1889-1934.
Spain--History--Civil War, 1936-1939.
Ukraine--History--Revolution, 1917-1921.