1. Benoiton de Chateauneuf, L.: 1830; ?De la durée de la vie?, Annales D'Hygiène Publique et de Médecine Légale 3, pp. 5?15.
2. Bowley, A. L.: 1990, Wages in the United Kingdom in the Nineteenth Century (The University Press, Cambridge).
3. Briggs, A.: 1968, Victorian Cities (Pelican Books, London).
4. Burnett, J.: 1979, Plenty and West: A Social History of Diet from 1815 to the Present Day (Scolar Press, London).
5. Census of England and Wales, 1911: 1917 (Her Majesty's Stationery office, London).