Columbia subject headings:
Constitutional history--Switzerland--Basel (Ecclesiastical principality)
Customary law--Switzerland--Basel (Ecclesiastical principality)--History.
Feudal law--Switzerland--Basel (Ecclesiastical principality)--History.
Harvard subject headings:
Basel (Ecclesiastical principality)--Constitutional history.
Customary law--Basel (Ecclesiastical principality)--History.
Customary law--Switzerland--Basel (Ecclesiastical principality)--History.
Feudal law--Basel (Ecclesiastical principality)--History.
Feudal law--Switzerland--Basel (Ecclesiastical principality)--History.
Princeton subject headings:
Basel (Ecclesiastical principality)--Constitutional history.
Customary law--Basel (Ecclesiastical principality)--History.
Feudal law--Basel (Ecclesiastical principality)--History.