Cockton index title: Return of Births in England and Wales and Deaths under One Year of Age, showing Average Annual Proportion per cent of Total of Deaths under One Year to Births, 1847-75; Return from Superintendent Registrars' Districts of Births, Deaths, Vaccination and Deaths from Small-pox, 1847-72
Transcribed from: Vaccination, mortality. Return relating to births and deaths in England and Wales, vaccination, small pox, &c. 1877 (433) LXVIII.553: Original Publisher details.
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