Columbia subject headings:
Cities and towns--Russia (Federation)--Volga River Region--History--18th century.
Cities and towns--Russia, Northwestern--History--18th century.
Occupations--Russia (Federation)--Volga River Region--History--18th century.
Occupations--Russia, Northwestern--History--18th century.
Russia, Northwestern--Economic conditions.
Volga River Region (Russia)--Economic conditions.
Harvard subject headings:
Cities and towns--Russia (Federation)--Volga River Region--History--18th century.
Cities and towns--Russia, Northwestern--History--18th century.
Occupations--Russia (Federation)--Volga River Region--History--18th century.
Occupations--Russia, Northwestern--History--18th century.
Russia, Northwestern--Economic conditions.
Volga River Region (Russia)--Economic conditions.
Princeton subject headings:
Cities and towns--Russia (Federation)--Volga River Region--History--18th century.
Cities and towns--Russia, Northwestern--History--18th century.
Occupations--Russia (Federation)--Volga River Region--History--18th century.
Occupations--Russia, Northwestern--History--18th century.
Russia, Northwestern--Economic conditions.
Volga River Region (Russia)--Economic conditions.