Columbia subject headings:
Brussels (Belgium)--Buildings, structures, etc.
Horta, Victor, baron, 1861-1947.
Palais des beaux-arts (Brussels, Belgium)
Harvard subject headings:
Brussels (Belgium)--Buildings, structures, etc.
Brussels (Belgium)--Intellectual life--20th century.
Palais des beaux-arts (Brussels, Belgium)
Princeton subject headings:
Le Bœuf, Henry, 1874-1935.
Palais des beaux-arts (Brussels, Belgium)--History.