2016-01-142016-01-141978The Ceylon Medical Journal, 23(1)pp.26-39https://dl.nsf.gov.lk/handle/1/20614Health SciencePoliomyelitisViral HepatitisDengueTetanusRabiesTuberculosisCholeraVaccinationHealth surveysEpidemiological report, January to March,1978Article