Columbia subject headings:
Black Sea Lowland (Ukraine)--History--Sources.
Krasnodarskiĭ kraĭ (Russia)--History--Sources.
Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡--Party work.
Soviet Union--History--Revolution, 1917-1921--Sources.
Harvard subject headings:
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Party work.
Princeton subject headings: