Seventh International Congress of Hygiene and Demography : London, August 10 -17, 1891 : Official directory.
- International Congress of Hygiene and Demography 1891 : London)
- Date:
- [1891]
Licence: Public Domain Mark
Credit: Seventh International Congress of Hygiene and Demography : London, August 10 -17, 1891 : Official directory. Source: Wellcome Collection.
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