Campaign to eliminate mosquitos (19 magg 1900 anni – 20 magg 1969 anni)
Descrizione:
Malaria being carried by mosquitoes caused the use of many different tactics to kill mosquitos, such as DDT and other pesticides. Due to the environmental effects by DDT and other pesticides the program was shut down by WHO.Aggiunto al nastro di tempo:
Data:
19 magg 1900 anni
20 magg 1969 anni
~ 69 years