Columbia subject headings:
Architects--Italy--Piacenza--Biography.
Architecture--Italy--Piacenza--History--20th century.
Harvard subject headings:
Architecture--Italy--Piacenza--History--20th century.
Piacenza (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architects--Italy--Piacenza--Biography.
Architecture--Italy--Piacenza--20th century.