SALK AND SABIN VACCINATION OF POPULATION GROUPS; AN EPIDEMIOLOGIC EVALUATION.
D001699:Biometry; D006801:Humans; D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines; D044382:Population Groups; D013223:Statistics as Topic; D014611:Vaccination
D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines
POLIOVIRUS VACCINE; POLIOVIRUS VACCINE, ORAL; STATISTICS