Manchurian Plague: The Deadliest Epidemic in the Chinese History that Killed 60,000 People
#44 Chinese staff disinfecting at close of working hours. 1:3000 mercury bichloride
Weird

Manchurian Plague: The Deadliest Epidemic in the Chinese History that Killed 60,000 People
#44 Chinese staff disinfecting at close of working hours. 1:3000 mercury bichloride
Weird