Columbia subject headings:
Architecture--Austria--Vienna--History--20th century--Exhibitions.
Vienna (Austria)--Buildings, structures, etc.--Exhibitions.
Harvard subject headings:
Architects--Austria.
Architecture, Modern--20th century--Austria--Vienna--Exhibitions.
Architecture, Modern--20th century--Exhibitions
Architecture, Modern--Austria--Vienna--20th century--Exhibitions.
City planning--Austria--Vienna
Leischner, Erich--Exhibitions.
Vienna (Austria)--Buildings, structures, etc.--Exhibitions.
Princeton subject headings: