Columbia subject headings:
Harvard subject headings:
Apeldoorn (Netherlands)--Buildings, structures, etc.
Art--Netherlands--Apeldoorn.
Loo (Apeldoorn, Netherlands)
Orange-Nassau, House of--Homes and haunts--Netherlands--Apeldoorn.
Palaces--Netherlands--Apeldoorn.
Stichting Paleis Het Loo Nationaal Museum.
Princeton subject headings:
Apeldoorn (Netherlands)--Buildings, structures, etc.
Gardens--Netherlands--Apeldoorn.
Loo (Apeldoorn, Netherlands)
Palaces--Netherlands--Apeldoorn.