Columbia subject headings:
Architecture, Modern--20th century.
Architecture--Italy--Turin--History--20th century.
Turin (Italy)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Modern--21st century
Architecture--Italy--Turin--20th century.
Turin (Italy)--Buildings, structures, etc.--Guide books.
Princeton subject headings:
Architecture, Modern--20th century.
Architecture--Italy--Turin--20th century.
Turin (Italy)--Buildings, structures, etc.