Columbia subject headings:
Castles--Conservation and restoration--Netherlands--Grathem.
Grathem (Netherlands)--Buildings, structures, etc.
Hentrich, Helmut--Homes and haunts--Netherlands--Grathem.
Kasteel Groot Buggenum (Grathem, Netherlands)
Harvard subject headings:
Castles--Netherlands--Grathem--Conservation and restoration.
Grathem (Netherlands)--Buildings, structures, etc.
Hentrich, Helmut, 1905---Homes and homes--Netherlands--Grathem.
Kasteel Groot Buggenum (Grathem, Netherlands)
Princeton subject headings: