Browsing by Author "Costa, S."
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Item Analysis of poly aromatic hydrocarbons including benzo (a) pyrene in particulate matter from vehicular exhaust emissions(1994) Mathes, J.A.P.; Karunasinghe, A.W.J.; Costa, S.; Gunawardhana, H.D.Item Hepatitis B and C virus markers among new entrant medical students(1999) Premawardhena, A.P.; Premaratne, R.; Jayaweera, G.; Costa, S.; Chandrasena, L.G.; De Silva, H.J.