Columbia subject headings:
Castles--Germany--Congresses.
Gardens--Germany--Congresses.
Gardens--Germany--Designs and plans--Congresses.
Gardens--Germany--Hannover--Congresses.
Grosser Garten zu Herrenhausen (Hannover, Germany)--Congresses.
Herrenhäuser Gärten (Hannover, Germany)--Congresses.
Historic gardens--Germany--Hannover--Congresses.
Schloss Herrenhausen (Hannover, Germany)--Congresses.
Harvard subject headings:
Castles--Germany--Congresses.
Gardens--Germany--Congresses.
Gardens--Germany--Designs and plans--Congresses.
Gardens--Germany--Hannover--Congresses.
Grosser Garten zu Herrenhausen (Hannover, Germany)--Congresses.
Herrenhäuser Gärten (Hannover, Germany)--Congresses.
Historic gardens--Germany--Hannover--Congresses.
Schloss Herrenhausen (Hannover, Germany)--Congresses.
Princeton subject headings:
Castles--Germany--Congresses.
Gardens--Germany--Congresses.
Gardens--Germany--Designs and plans--Congresses.
Gardens--Germany--Hannover--Congresses.
Grosser Garten zu Herrenhausen (Hannover, Germany)--Congresses.
Herrenhäuser Gärten (Hannover, Germany)--Congresses.
Historic gardens--Germany--Hannover--Congresses.
Schloss Herrenhausen (Hannover, Germany)--Congresses.