Columbia subject headings:
Books and reading--Germany--Gartenreich Dessau-Wörlitz--Congresses.
Libraries--Germany--Gartenreich Dessau-Wörlitz--History--Congresses.
Library resources--Germany--Gartenreich Dessau-Wörlitz--History--Congresses.
Harvard subject headings:
Books and reading--Germany--Gartenreich Dessau-Wörlitz--Congresses.
Libraries--Germany--Gartenreich Dessau-Wörlitz--History--Congresses.
Library resources--Germany--Gartenreich Dessau-Wörlitz--History--Congresses.
Princeton subject headings: