Columbia subject headings:
Architects--Legal status, laws, etc.--Belgium.
Architects--Legal status, laws, etc.--France.
Building laws--Belgium.
Building laws--France.
Contractors--Belgium.
Contractors--France.
Harvard subject headings:
Architects--Legal status, laws, etc.--Belgium.
Architects--Legal status, laws, etc.--France.
Building laws--Belgium.
Building laws--France.
Contractors--Belgium.
Contractors--France.
Princeton subject headings: