THE STORY OF POLIOMYELITIS VACCINES.
D006664:History; D049673:History, 20th Century; D006801:Humans; D011051:Poliomyelitis; D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines
D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines
HISTORY; HISTORY OF MEDICINE, 20TH CENT.; POLIOVIRUS VACCINE; POLIOVIRUS VACCINE, ORAL