Columbia subject headings:
Russians--Spain--History--20th century.
Spain--History--Civil War, 1936-1939--Participation, Russian.
Harvard subject headings:
Russians--Spain--History--20th century.
Spain--History--Civil War, 1936-1939--Participation, Russian.
Princeton subject headings:
Spain--History--Civil War, 1936-1939--Foreign participation--Russian.
Spain--History--Civil War, 1936-1939--Personal narratives, Russian.