Jonas Salk Conquering Polio

Jonas Salk Conquering Polio
Code: LER-YAL-E-00009
Price: $20.95
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In the 1940s and 1950s, Americans desperately needed a certain kind of hero. Polio was terrorizing the country every summer. Despite the hard work of many doctors and scientists, no one could find a way to stop it. Then a medical researcher named Jonas Salk took on the challenge of discovering a polio vaccine
By Stephanie Sammartino McPherson
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