'His oral polio vaccine was first tested on volunteer cons, then had large-scale tests in the Soviet Union'
Albert Sabin
20th CENTURY PEOPLE: His oral polio vaccine was first tested on volunteer cons, then had large-scale tests in the Soviet Union
His oral polio vaccine was first tested on volunteer cons, then had large-scale tests in the Soviet Union
His oral polio vaccine was first tested on volunteer cons, then had large-scale tests in the Soviet Union
20th CENTURY PEOPLE
Albert Sabin
20th CENTURY PEOPLE