Columbia subject headings:
Harvard subject headings:
Architecture--Belgium--History.
Architecture--Germany--History--20th century
Art nouveau--Belgium.
Art nouveau--Germany.
Decoration and ornament--Belgium--Art nouveau.
Decoration and ornament--Germany--Art nouveau.
Velde, Henry van de, 1863-1957.
Princeton subject headings:
Architecture, Modern--20th century--Belgium.
Architecture, Modern--20th century--Germany.
Art nouveau--Belgium.
Art nouveau--Germany.
Decoration and ornament--Belgium--Art nouveau.
Decoration and ornament--Germany--Art nouveau.
Velde, Henry van de, 1863-1957.