Photograph depicting how the gauze-cotton mask should be worn
- K. Chimin Wong and Wu Lien-Teh
Licence: In copyright
Credit: Photograph depicting how the gauze-cotton mask should be worn. Wellcome Collection. Source: Wellcome Collection.
Licence: In copyright
Credit: Photograph depicting how the gauze-cotton mask should be worn. Wellcome Collection. Source: Wellcome Collection.