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Boopathisankar Muthuraj
's Polls
Inventions in the world
Who invented polio vaccine (oral)?
A. Albert Sabin
1 vote (20%)
A. Albert Sabin
B. Burkholder
2 votes (40%)
B. Burkholder
C. Luise Pasture
0 votes (0%)
C. Luise Pasture
D. Jonas Salk
2 votes (40%)
D. Jonas Salk
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