April 12, 1955 – Dr. Jonas Salk’s discovery of a polio vaccine is announced.
Patenting the sun : polio and the Salk vaccine
RA644.P9 S553 1990 Stacks
April 12, 1955 – Dr. Jonas Salk’s discovery of a polio vaccine is announced.
Patenting the sun : polio and the Salk vaccine
RA644.P9 S553 1990 Stacks
Be nice. Keep it clean. Stay on topic. No spam.
You can use these tags:
<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>