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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 gen 1954 anni - 1954: First polio vaccine passes testing on humans, contains penicillin
Aggiunto al nastro di tempo:
Dorothy Crowfoot Hodgkin
By
Charles Slattery
20 nov 2018
0
0
568
Data:
1 gen 1954 anni
Adesso
~ 71 years ago
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