Columbia subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--Description and travel.
Saint Petersburg (Russia)--History.
Harvard subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--Description and travel.
Saint Petersburg (Russia)--History.
Princeton subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--Description and travel.
Saint Petersburg (Russia)--History.