Columbia subject headings:
Building, Brick--Conservation and restoration--Netherlands.
Building, Brick--Conservation and restoration.
Historic buildings--Conservation and restoration--Netherlands.
Masonry--Maintenance and repair.
Harvard subject headings:
Building, Brick--Conservation and restoration--Netherlands.
Building, Brick--Conservation and restoration.
Historic buildings--Conservation and restoration--Netherlands.
Masonry--Maintenance and repair.
Princeton subject headings:
Building, Brick--Conservation and restoration--Netherlands.
Building, Brick--Conservation and restoration.
Historic buildings--Conservation and restoration--Netherlands.
Masonry--Congresses.
Masonry--Maintenance and repair.
Stone buildings--Conservation and restoration--Congresses.