'This vaccine developed by Jonas Salk was tested on almost 2 million children from 1954 to 1955'
the polio vaccine
AT THE PHARMACY: This vaccine developed by Jonas Salk was tested on almost 2 million children from 1954 to 1955
This vaccine developed by Jonas Salk was tested on almost 2 million children from 1954 to 1955
This vaccine developed by Jonas Salk was tested on almost 2 million children from 1954 to 1955
AT THE PHARMACY
the polio vaccine
AT THE PHARMACY