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A biography of Jonas Salk, the man who saved thousands of lives by discovering a vaccine for polio. (In Spanish)
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"killed" polio virus, immunization, inmunizacion, jonas salk, la poliomielitis, paralytic polio, polio virus, poliomyelitis, salk, dr. jonas salk, hrw, jonas edward salk, medical research, polio vaccine, salk institute, salk institute for biological studies, salk vaccine, el instituto salk de estudios biologicos, vaccine for polio
Classroom Considerations
- Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)