Columbia subject headings:
Civil-military relations--Soviet Union--History--19th century.
Civil-military relations--Soviet Union--History--20th century.
Cossacks--History--19th century.
Cossacks--History--20th century.
Sociology, Military--Soviet Union--History--19th century.
Sociology, Military--Soviet Union--History--20th century.
Harvard subject headings:
Civil-military relations--Soviet Union--History--19th century.
Civil-military relations--Soviet Union--History--20th century.
Cossacks--History--19th century.
Cossacks--History--20th century.
Sociology, Military--Soviet Union--History--19th century.
Sociology, Military--Soviet Union--History--20th century.
Princeton subject headings: