The credit of developing the polio vaccine goes to--

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প্রশ্নঃ The credit of developing the polio vaccine goes to--

  • ক. Selman Waksman
  • খ. John Sleeman
  • গ. Jonas Salk
  • ঘ. Alb E. Sabin

সঠিক উত্তরঃ

Jonas Salk
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