Columbia subject headings:
Architecture--Austria--History--20th century.
Dietrich, Helmut, 1957-
Dietrich/Untertrifaller Architekten.
Untertrifaller, Much.
Harvard subject headings:
Architects--Austria.
Architecture--Austria--20th century.
Dietrich, Helmut, 1957-
Dietrich/Untertrifaller Architekten.
Untertrifaller, Much.
Princeton subject headings:
Architects--Austria.
Architecture--Austria--History--20th century.
Dietrich, Helmut, 1957-
Dietrich/Untertrifaller Architekten.
Untertrifaller, Much, 1959-