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Credit
Memorandum on certain methods in use for the sterilization of the exit air from the wards of small-pox hospitals. Prepared / by F.W. Barry. Public Domain Mark. Source: Wellcome Collection.
Provider
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.