Columbia subject headings:
Harvard subject headings:
Anthroposophy.
Folk religion--Germany--History.
Franz, Sandra. Religion des Grals.
Grail--Legends--History and criticism
Grail--Legends--Sources.
Princeton subject headings:
Franz, Sandra. Religion des Grals.
Grail--Legends--History and criticism.
Steiner, Rudolf, 1861-1925.