Columbia subject headings:
Gressenbauer, Horst, 1940-
Schwalm-Theiss & Gressenbauer.
Schwalm-Theiss, Georg, 1943-
Theiss & Jaksch.
Harvard subject headings:
Architectural firms--Austria.
Architecture, Modern--20th century--Austria.
Gressenbauer, Horst.
Schwalm-Theiss, Georg.
Princeton subject headings: