Polio Vaccine Jonas Salk - 搜索图片

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historynet.com
When 2 Million American Schoolchildren Field-Tested the P…
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skepticalraptor.com
Polio vaccine – thanks Dr. Jonas Salk for saving so many lives
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walmart.ca
The Polio Pioneer: Dr. Jonas Salk and the Polio Vaccine …
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history.com
Dr. Jonas Salk announces polio vaccine | March 26, 1953 | HISTORY

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Britannica
Jonas Salk | Biography, Facts…
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triblive.com
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slate.com
Polio vaccine, Jonas Salk: How a medical mystery threatened to derail a global br…
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hawaiipublicradio.org
The Conversation: Addressing local environmental issues; History of Jonas Salk and his polio ...

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