Columbia subject headings:
Architecture--Italy--Piedmont--History--20th century.
Harvard subject headings:
Architecture--Italy--Piedmont--20th century--Guidebooks.
Architecture--Italy--Piedmont--21st century--Guidebooks.
Princeton subject headings:
Architecture--Italy--Piedmont--20th century--Guidebooks.
Architecture--Italy--Piedmont--21st century--Guidebooks.
Guidebooks.