Columbia subject headings:
Russia--History--1613-1689.
Russia--History--1689-1801.
Volga River Region (Russia)--History.
Harvard subject headings:
Russia--History--1613-1689.
Russia--History--1689-1801.
Volga River Region (Russia)--History.
Princeton subject headings:
Russification--Russia (Federation)--Volga River Region.
Volga River Region (Russia)--Ethnic relations.
Volga River Region (Russia)--History.