Herb858 Herb858

29-10-2014
Biology

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What contribution did Jonas Salk make to science in the 1950s?

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sadisticallyartistic sadisticallyartistic

29-10-2014

he basically made the first safe and effective vaccine for the disease Polio

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Аноним Аноним

29-10-2014

Jonas Salk made the Polio vaccine.

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