1. McKeown T. and Brown R.G. Medical evidence related to English population changes in the eighteenth century. In Population in History, op. cit.
2. Population, economy and society;Eversley,1965
3. Mortality Patterns in National Populations with Special Reference to Recorded Causes of Death;Preston,1976
4. Background paper on Health, mimeo;Grosse Robert;Presented and the Bellagio Conference on Health and Population in Developing Countries,1979
5. Mortality differentials and their correlates in Africa;Ohadike;Proceedings of the UN-WHO Conference on the socio-economic determinants and consequences of mortality,1979