अगला

This Scientist Linked Contaminated Water to Cholera Outbreaks Age of Humans: Water | Smithsonian

3,394 विचारों· 10/22/23
Smithsonian Channel
Smithsonian Channel
1,606 ग्राहकों
1,606
में Discovery

A scientist named Robert Koch, sent in to investigate the causes of a cholera outbreak in Hamburg in the 19th century, correctly identified contaminated water as the prime suspect–and the...

और दिखाओ

 0 टिप्पणियाँ sort   इसके अनुसार क्रमबद्ध करें


अगला