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Credit
Aération, ventilation et chauffage des salles de malades dans les hôpitaux : mémoire présenté à l'Académie impériale de médecine, le 7 mars 1865 / par T. Gallard. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.