SUNADA, K Observations on the potency and safety of poliomyelitis vaccine (Salk type) currently used. [electronic resource] - A.M.A. journal of diseases of children Aug 1958 - 125-30 p. digital Publication Type: Journal Article ISSN: 0096-6916 Standard No.: 10.1001/archpedi.1958.02060060127001 doi Subjects--Topical Terms: Poliomyelitis--immunologySafetyVaccines