ak6roiuiR9olase ak6roiuiR9olase

05-04-2016
Chemistry

contestada

Who developed the polio vaccine?
George Marshall
Jonas Salk
Marie Curie
Carlos Finlay

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penfila11Pen penfila11Pen

05-04-2016

Dr. Jonas Salk developed the polio vaccine.

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jonsyd18 jonsyd18

05-04-2016

Jonas Salk developed the polio vaccine.

Answer Link

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