Columbia subject headings:
Harvard subject headings:
Russia--Relations--Italy--Tuscany.
Tuscany (Italy)--History--17th century.
Tuscany (Italy)--History--18th century.
Tuscany (Italy)--Relations--Russia.
Princeton subject headings:
Russia--Relations--Italy--Tuscany.
Tuscany (Italy)--History--17th century.
Tuscany (Italy)--History--18th century.
Tuscany (Italy)--Relations--Russia.