"Polio plagued humans for thousands of years with no cure and few effective treatments. This informative book describes how there was no real understanding of what it was until scientists were able to do research on the disease using microscopes. It was not until 1961 that a vaccine was developed. Since then, polio has been eradicated in most of the world"--
Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.
Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.