Transactions of the Seventh International Congress of Hygiene and Demography, London, August, 10th-17th, 1891 / edited by C.E. Shelly.

Licence: Public Domain Mark

Credit: Transactions of the Seventh International Congress of Hygiene and Demography, London, August, 10th-17th, 1891 / edited by C.E. Shelly. Source: Wellcome Collection.