Columbia subject headings:
Ghosts--Europe, Central--Congresses.
Magic--Europe, Central--Congresses.
Occultism--Europe, Central--Congresses.
Harvard subject headings:
Ghosts--Europe, Central--Congresses.
Magic--Europe, Central--Congresses.
Occultism--Europe, Central--Congresses.
Superstition in literature--Congresses.
Superstition--Germany--Westphalia--History--Congresses.
Westphalia (Germany)--Social life and customs--Congresses.
Princeton subject headings:
Superstition in literature--Congresses.
Superstition--Germany--Westphalia--History--Congresses.
Westphalia (Germany)--Social life and customs--Congresses.