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| | Nat' Academies Press, Beyond Six Billion: Forecasting the World's Population (2000) |
 | | Reductions in mortality proceeded in a fairly regular manner during this period, despite the last huge fluctuation, caused by the Spanish influ 3 For example, water purification techniques limited exposure to such intestinal infections as dysentery, typhoid, and cholera, reducing nutritional expenditure and improving nutritional status. |
 | | Mortality changes in the first and second stages were largely due to slow political and institutional changes, gradual economic transformation, and limited behavioral and clinical developments. |
 | | Projecting Mortality Crises Whether the types of events that produce mortality crises can be predicted or not is beyond the scope of this report; this depends on research in other fields, such as biology and medicine, politics, climatology, environmental science, and even astronomy. |
| books.nap.edu /books/0309069904/html/114.html (7681 words) |
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