Columbia subject headings:
Harvard subject headings:
Architecture, Modern--19th century
Architecture, Modern--20th century--Austria.
Architecture, Modern--21st century
Architecture--Austria--History--19th century.
Loos, Adolf, 1870-1933.
Wagner, Otto, 1841-1918.
Princeton subject headings:
Architecture, Modern--20th century.
Loos, Adolf, 1870-1933.
Wagner, Otto, 1841-1918.