How was Richard Stone awarded the Noble Prize in Economics?

Name: Richard Stone.
Real Name: John Richard Nicholas Stone.
Country: United Kingdom.
Date of Birth: August 30, 1913.
Died: December 06, 1991.
Education: Graduate from Gonville and Caius College, and Doctor of Philosophy (Ph.D.) from Cambridge King’s College in Cambridge.
Subjects Of Study: National income accounting.
Popularly Known: The father of national income accounting.
Noble Prize Year: Nobel Prize for Peace in 1984, for having made fundamental contributions to the development of systems of national accounts and hence greatly improved the basis for empirical economic analysis.