Paul Hermann Müller
18991965
Swiss chemist and physician who received the 1948 Nobel Prize for discovering the insecticidal properties of DDT, crucial for controlling malaria and yellow fever
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ফিল্টার প্রয়োগ করে জীবনে সব দেখুন18951965
American photojournalist whose images captured the human face of the Great Depression and Japanese American internment
