Columbia subject headings:
Architects--Russia (Federation)--Saint Petersburg--Biography.
Architects--Switzerland--Ticino--Biography.
Architecture--Russia (Federation)--Saint Petersburg--History--18th century.
Architecture--Russia (Federation)--Saint Petersburg--History--19th century.
Bernasconi family.
Rossi family.
Rusca family.
Saint Petersburg (Russia)--Buildings, structures, etc.--History.
Ticino (Switzerland)--Biography.
Harvard subject headings:
Architects--Switzerland--Ticino--Biography.
Architecture, Swiss--Russia (Federation)--Saint Petersburg--History--18th century.
Architecture, Swiss--Russia (Federation)--Saint Petersburg--History--19th century.
Saint Petersburg (Russia)--Buildings, structures, etc.
Swiss--Russia (Federation)--Saint Petersburg--History.
Princeton subject headings: