Jonas Salk
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Fun History FactWhen Dr. Jonas Salk invented the polio vaccine, he refused to patent the vaccine cit
Fun History FactWhen Dr. Jonas Salk invented the polio vaccine, he refused to patent the vaccine cit
historycultureeducation: Jonas Salk didn’t patent his 1955 polio vaccine so that it would be afforda
historycultureeducation: Jonas Salk didn’t patent his 1955 polio vaccine so that it would be afforda
Mothers line up outside a school for their children to receive the trial polio vaccine (USA, 1955).
Mothers line up outside a school for their children to receive the trial polio vaccine (USA, 1955).
cracked: He doesn’t get a holiday but Rutherford B. Hayes does? 22 Inspiring Acts of Kindness
cracked: He doesn’t get a holiday but Rutherford B. Hayes does? 22 Inspiring Acts of Kindness
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