Columbia subject headings:
Russia--Emigration and immigration--History--18th century.
Russian Germans--History.
Volga River Region (Russia)--History.
Harvard subject headings:
Germans--Russia (Federation)--Volga River Region--History--18th century.
Germans--Russia--History.
Russian Germans--History--18th century.
Saratovskai︠a︡ oblastʹ (Russia)--History.
Volga River Region (Russia)--History--18th century.
Princeton subject headings: