Columbia subject headings:
Credit--Europe--History--Sources.
Credit--Moral and ethical aspects--Europe--History--Sources.
Restitution--Europe--History--Sources.
Unjust enrichment--Europe--History--Sources.
Usury laws (Canon law)--Sources.
Usury--Europe--History--Sources.
Harvard subject headings:
Credit--Europe--History--Sources.
Credit--Moral and ethical aspects--Europe--History--Sources.
Restitution--Europe--History--Sources.
Unjust enrichment--Europe--History--Sources.
Usury laws (Canon law)--Sources.
Usury--Europe--History--Sources.
Princeton subject headings:
Economics--Religious aspects--Christianity.
Europe--Economic conditions--To 1492.
Restitution--Europe--History--To 1500.
Unjust enrichment--Europe--History--To 1500.
Usury--Religious aspects.