Rajaa
Hakutulokset: 9780199334438
Rajaa
yksi hakutulos.
Jonas Salk
e-kirja,
2015,
englanti,
ISBN 9780199334438
When a waiting world learned on April 12, 1955, that Jonas Salk had successfully created a vaccine to prevent poliomyelitis, he became a hero overnight. Born in a New York …