Columbia subject headings:
Architecture, Domestic--Austria--Vienna.
Architecture--Austria--Vienna--History--20th century.
City planning--Austria--Vienna--History.
Urban renewal--Austria--Vienna.
Harvard subject headings:
Architecture, Domestic--Austria--Vienna.
Architecture, Modern--20th century--Austria--Vienna.
Architecture, Modern--21st century
City planning--Austria--Vienna--History.
Urban renewal--Austria--Vienna.
Princeton subject headings:
Apartment houses--Austria--Vienna.
Architecture, Domestic--Austria--Vienna.
Vienna (Austria)--Buildings, structures, etc.