Chemists analyzes chemical samples, 1931
In the Prussian State Office for Water, Soil and Air Hygiene. A chemist examines the impact of chlorine on the plant and animal organisms which occur in industrial water
Picture No
10517129
Media ID
48009389
Size
2666px x 1929px
(2.3MB)
Credit
Mary Evans / SZ Photo / Scherl
Date
1931


