World War One At ±«Óãtv - Royal Society of Chemistry, London: Gas Mask Inventor Edward Harrison - ±«Óãtv Sounds
World War One At ±«Óãtv - Royal Society of Chemistry, London: Gas Mask Inventor Edward Harrison - ±«Óãtv Sounds
Royal Society of Chemistry, London: Gas Mask Inventor Edward Harrison
The small box respirator gas mask, is credited with saving thousands of lives.
