1. A theory of marriage: Part I;Becker;J. Political Economy,1973
2. A Treatise on the Family;Becker,1991
3. The Decline and Fall of the British Aristocracy;Cannadine,1990
4. What were the British earnings and prices then? (new series) measuringworth;Clark,2021
5. Causes of the fall of agricultural prices between 1875 and 1895;Conacher,1973