Columbia subject headings:
Architecture--Russia (Federation)--Saint Petersburg.
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--History.
Harvard subject headings:
Architecture, Baroque--Russia (Federation)--Saint Petersburg.
Architecture--Russia (Federation)--Saint Petersburg
Saint Petersburg (Russia)
Saint Petersburg (Russia)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Russia (Federation)--Saint Petersburg.
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--History.