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29 agos 1939 anni - Malaria & DDT

Descrizione:

Paul Hermann Muller decided to test DDT. DDT was widely used to combat malaria and other mosquito vectors that carried disease. It was sprayed into building walls in malaria endemic areas to prevent mosquitoes from transmitting the disease

Aggiunto al nastro di tempo:

Data:

29 agos 1939 anni
Adesso
~ 86 years ago