Literature

1.	Hald, A. 1990. A history of probability and statistics and their applications before 1750. Wiley, New York.
2.	Hollingworth, T.H. 1977. Mortality in the British peerage families since 1600. Population, special number.
3.	Pearson, K. 1978. The history of statistics in the 17th and 18th centuries. Griffin, London.
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5.	Razzell, P. 1994. Essays in English Population History. Caliban Books, London.
6.	Registrar General. 1843. Fifth report of the Registrar General. HMSO, London.
7.	Thatcher, A.R. 1992. Trends in numbers and mortality at high ages in England and Wales. Population Studies; 46:411-426.