Columbia subject headings:
Mysticism--History--Middle Ages, 600-1500--Indexes.
Rudolf, von Biberach, approximately 1270- De septem itineribus aeternitatis--Indexes.
Harvard subject headings:
Mysticism--History--Middle Ages, 600-1500--Indexes.
Rudolf, von Biberach, approximately 1270- De septem itineribus aeternitatis--Indexes.
Princeton subject headings:
Rudolf, von Biberach, approximately 1270- Siben strassen zu gott--Concordances.