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28 August, 19:34

Who developed the polio vaccine?

George Marshall

Jonas Salk

Marie Curie

Carlos Finlay

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Answers (2)
  1. 28 August, 19:47
    0
    Jonas Salk developed the polio vaccine.
  2. 28 August, 19:50
    0
    Dr. Jonas Salk developed the polio vaccine.
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