Making the medical mask: surgery, bacteriology, and the control of infection (1870s–1920s) | Medical History | Cambridge Core
Respirator for Chemicals | Protective Dust Mask | uvex safety
Masque WERO SWISS Protect Typ II R - Diacosa AG
Distribution of low quality filtering facepiece respirators during the COVID-19 pandemic: an independent analysis of the situation in Switzerland | Swiss Medical Weekly