East-Radcliffe Respirator, model C.A.P.I.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: East-Radcliffe Respirator, model C.A.P.I. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: East-Radcliffe Respirator, model C.A.P.I. Wellcome Collection. Source: Wellcome Collection.