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Credit
Ochistka khimicheskim sposobom vody dlia pit'ia : materialy dlia obshchestvennoi gigieny, iz gigienicheskoi laboratorii Prof. A.P. Dobroslavina : dissertatsiia na stepen' doktora meditsiny / F.K. Ziembitskago. 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.