Columbia subject headings:
Architecture--Italy--Polenta.
Polenta (Italy)--Buildings, structures, etc.
Polenta (Italy)--History.
Harvard subject headings:
Architecture--Italy--Polenta.
Polenta (Italy)--Buildings, structures, etc.
Polenta (Italy)--History.
Princeton subject headings:
Architecture--Italy--Polenta.
Polenta (Italy)--Buildings, structures, etc.
Polenta (Italy)--History.