Columbia subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--History.
Stockholm (Sweden)--Buildings, structures, etc.
Stockholm (Sweden)--History.
Water and architecture--Russia (Federation)--Saint Petersburg.
Water and architecture--Sweden--Stockholm.
Harvard subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.
Saint Petersburg (Russia)--History.
Stockholm (Sweden)--Buildings, structures, etc.
Stockholm (Sweden)--History
Water and architecture--Russia (Federation)--Saint Petersburg.
Water and architecture--Sweden--Stockholm.
Princeton subject headings:
Saint Petersburg (Russia)--Buildings, structures, etc.--Exhibitions.
Saint Petersburg (Russia)--History--Exhibitions.
Stockholm (Sweden)--Buildings, structures, etc.--Exhibitions.
Stockholm (Sweden)--History--Exhibitions.
Water and architecture--Russia (Federation)--Saint Petersburg.
Water and architecture--Sweden--Stockholm--Exhibitions.