Columbia subject headings:
Soviet Union--History--Revolution, 1917-1921.
Harvard subject headings:
Konstitut︠s︡ionno-demokraticheskai︠a︡ partii︠a︡.
Soviet Union--History--Allied intervention, 1918-1920--Causes.
Princeton subject headings:
Konstitut︠s︡ionno-demokraticheskai︠a︡ partii︠a︡.
Soviet Union--History--Allied intervention, 1918-1920--Causes.