Columbia subject headings:
Europe--Commerce--Russia--History--17th century.
Merchants--Russia--History--17th century.
Russia--Commerce--Europe--History--17th century.
Harvard subject headings:
Europe--Commerce--Russia--History--17th century.
Merchants--Europe--History--17th century.
Merchants--Russia--History--17th century.
Russia--Commerce--Europe--History--17th century.
Russia--Commerce--History--17th century.
Princeton subject headings:
Europe--Commerce--Russia--History--17th century.
Merchants--Russia--History--17th century.
Middle class--Russia--History--17th century.
Russia--Commerce--Europe--History--17th century.