'This "wonder insecticide" developed by Swiss scientists in 1939 was later found less than wonderful'
DDT
THE 20TH CENTURY: This wonder insecticide developed by Swiss scientists in 1939 was later found less than wonderful
This "wonder insecticide" developed by Swiss scientists in 1939 was later found less than wonderful
This "wonder insecticide" developed by Swiss scientists in 1939 was later found less than wonderful
THE 20TH CENTURY
DDT
THE 20TH CENTURY