https://creativecommons.org/publicdomain/zero/1.0/ https://www.rawpixel.com/image/2298618 ![Masks worn during experiments with plague. Manila, Philippines (1912). Original image from National Museum of Health and…]( "Masks worn during experiments with plague.… | Free public domain photo")
Masks worn during experiments with plague. Manila, Philippines (1912). Original image from National Museum of Health and Medicine. Digitally enhanced by rawpixel.
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