Columbia subject headings:
Architecture, Domestic--Austria--Lower Austria.
Architecture--Austria--Lower Austria--History--19th century.
Architecture--Austria--Lower Austria--History--20th century.
Country homes--Austria--Lower Austria.
Harvard subject headings:
Architecture, Domestic--Austria--Lower Austria.
Architecture, Modern--19th century--Austria--Lower Austria.
Architecture, Modern--20th century--Austria--Lower Austria.
Country homes--Austria--Lower Austria.
Princeton subject headings:
Architecture, Domestic--Austria, Lower.
Architecture, Modern--19th century--Austria, Lower.
Country homes--Austria, Lower.