File:PSM V63 D179 Death rate in professional families and laboring classes.png

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English: Death rate in professional families and laboring classes
Date
Source Popular Science Monthly Volume 63
Author Unknown authorUnknown author

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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:PSM_V63_D179_Death_rate_in_professional_families_and_laboring_classes.png

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1 June 1903Gregorian

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current03:26, 12 March 2017Thumbnail for version as of 03:26, 12 March 20171,699 × 835 (157 KB)IneuwUser created page with UploadWizard