Columbia subject headings:
Ravesteyn, Sybold van, 1889-1983.
Harvard subject headings:
Architects--Netherlands.
Architecture--Netherlands--20th century.
Ravesteyn, Sybold van, 1889-1983.
Princeton subject headings:
Architecture--Netherlands--History--20th century.
Ravesteyn, Sybold van, 1889-1983.