2015-04-202015-04-20https://dl.nsf.gov.lk/handle/1/19072Medical SciencesMicrobiologyImmunologyStability of R-plasmids (isolated from clinical source and drinking water source) in Salmonell typhi, Shigella dysenteriae, E.coli and Klebsiella aerogenes in nutritive and non nutritive mediaUniversity of JaffnaRG/86/M/003FR 0313