Abstract
References
1.Metropolitan Life Insurance Company of New York (1969 ) Statist. Bull.
50 , 6 .
2.
Morris
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3.
Parnell
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231 , 567 .
4.Registrar General (1951 ) Decennial Supplement, England & Wales, Life Tables.
5.Registrar General (1961 ) Decennial Supplement, England & Wales, Life Tables.
6.Registrar General (1967 ) Statistical Review, Part I, Medical.