Jonas Salk and the polio vaccine
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A biography of the scientist and humanitarian who discovered the vaccine for polio, a disease which crippled many people in the early part of the twentieth century.
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A biography of the scientist and humanitarian who discovered the vaccine for polio, a disease which crippled many people in the early part of the twentieth century.
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"A biography of the scientist and humanitarian who discovered the vaccine for polio, a disease which crippled many people in the early part of the twentieth century."
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