Columbia subject headings:
Architectural firms--Switzerland.
Hebeisen + Vatter Architekten.
Harvard subject headings:
Architectural firms--Switzerland.
Architecture--Switzerland--History--20th century
Hebeisen + Vatter Architekten.
Princeton subject headings:
Architectural firms--Switzerland.
Architecture--Switzerland--History--20th century.
Hebeisen + Vatter Architekten.