http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1.Fundamental ideas--2.Two difficult techniques:tracing and subrogation--3.Mistake--4.Ignorance--5.Duress--6.Explotation--7.Legal compulsion:compulsory discharge of another's legal liability--8.Necessity--9Failure of consideration--10.Incapacity as a ground for restitution--11.Illegality as a ground for restitution--12.Ultra vires demands by public authorities--13.Retention of property belonging to the plaintiff without his consent--14.Unjust enrichment by wrongdoing--15.Defences--16.Miscellaneous issues:agency and the conflict of laws.
Includes bibliographical references and index(p.502-508)