A polio-free world?
Webster
Paul
P
D002648:Child; D014943:Global Health; D006801:Humans; D017589:Immunization Programs; D007194:India / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control* / Q000821:virology; D017955:Poliovirus / Q000145:classification; D023321:Poliovirus Vaccines / Q000008:administration & dosage
D023321:Poliovirus Vaccines