Columbia subject headings:
Contracts--Belgium.
Contracts--Germany (West)
Contracts--Netherlands.
Third parties (Law)--Belgium.
Third parties (Law)--Germany (West)
Third parties (Law)--Netherlands.
Harvard subject headings:
Contracts--Belgium.
Contracts--Germany (West)
Contracts--Netherlands.
Third parties (Law)--Belgium.
Third parties (Law)--Germany (West)
Third parties (Law)--Netherlands.
Princeton subject headings: