Columbia subject headings:
Harvard subject headings:
Architects--Italy.
Architecture--Italy--Valle d'Aosta--20th century.
Architecture--Italy--Valle d'Aosta--21st century.
Valle d'Aosta (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Italy--Valle d'Aosta--20th century--Exhibitions.
Hillside architecture--Italy--Valle d'Aosta--Exhibitions.
Valle d'Aosta (Italy)--Buildings, structures, etc.--Exhibitions.