21. Jẹ anfaani awọn ọjọ ti ya sọtọ fun gbigba abẹrẹ ajẹsara fun awọn ọmọ wẹwẹ Publication: Nigeria : Johns Hopkins University, Population Communication Services, 1997 Subject(s): Mass VaccinationChild Health ServicesPoliomyelitis -- prevention & controlPoliovirus VaccinesNigeria
22. Ubochi ndi ala anyi weputara maka igba ogwu mgbochi Publication: Nigeria : Johns Hopkins University, Population Communication Services, 1997 Subject(s): Mass VaccinationChild Health ServicesPoliomyelitis -- prevention & controlPoliovirus VaccinesNigeria
23. National immunization days Publication: Nigeria : Johns Hopkins University, Population Communication Services, 1997 Subject(s): Mass VaccinationChild Health ServicesPoliomyelitis -- prevention & controlPoliovirus VaccinesNigeria
24. National immunisation days Publication: [Nigeria : s.n., 1998] Subject(s): Poliomyelitis -- prevention & controlChild Health ServicesMass VaccinationNigeria
25. National immunisation days Publication: [Nigeria] : JHU/PCS, [1998] Subject(s): Poliomyelitis -- prevention & controlChild Health ServicesMass VaccinationSoccerNigeria