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Diagram showing the relation between the death-rate from small-pox, and the proportion of population protected by Vaccination, in each district of the United Provinces of Agra and Oudh.

[NLS note: a graphic appears here - see image of page]

The black lines and figures indicate proportion of population protected by Vaccination during the year 1901-1902 and the six years preceding it.
The red lines and figures indicate the death-rate from small-pox during 1901.

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