Columbia subject headings:
Harvard subject headings:
Carolingians--Sources.
Church history--Middle Ages, 600-1500--Sources.
Councils and synods--Europe--History--Sources.
Councils and synods--History--Sources.
Europe--Church history--Sources.
Law, Germanic--Sources.
Law--Germany (Middle Ages)--Sources.
Princeton subject headings:
Councils and synods--History--Sources.
Law, Germanic--Sources.
Law--Germany (Middle Ages)--Sources.