Transactions of the Seventh International Congress of Hygiene and Demography, London, August, 10th-17th, 1891 / edited by C.E. Shelly.
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Transactions of the Seventh International Congress of Hygiene and Demography, London, August, 10th-17th, 1891 / edited by C.E. Shelly. Credit: This material has been provided by This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service. where the originals may be consulted.. Public Domain Mark