File:PSM V63 D179 Death rate in professional families and laboring classes.png
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![File:PSM V63 D179 Death rate in professional families and laboring classes.png](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/PSM_V63_D179_Death_rate_in_professional_families_and_laboring_classes.png/800px-PSM_V63_D179_Death_rate_in_professional_families_and_laboring_classes.png?20170312032644)
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