Seneviratne, L.B.E.Fernando, I.S.M.Ponnambalam, S.V.2012-01-102012-01-101950The Ceylon Journal of Medical Science7(1)pp.05-09https://dl.nsf.gov.lk/handle/1/6906PathologyInfectious diseasesSerodiagnosisDiphtheria in ceylon review of bacteriological typing of 643 casesArticle