Columbia subject headings:
Architecture--Austria--History--20th century--Exhibitions.
Boltenstern, Erich, 1896-1991--Exhibitions.
Harvard subject headings:
Architects--Austria.
Architecture--Austria--20th century.
Boltenstern, Erich, 1986-1991--Exhibitions.
Modern movement (Architecture)--Austria.
Princeton subject headings:
Architecture--Austria--20th century--Exhibitions.
Boltenstern, Erich, 1896-1991--Exhibitions.