Citation:Karunaratna, D.D.R.M., Dharmadasa, R.A.P.I.S., Rathnayaka, R.M.S.D. and Edirisinghe, E.A.J.K. (2014). Determinants of Net Sale Average (NSA) of orthodox black tea factories in high elevation, Sri Lanka, Kelaniya Journal of Management, University of Kelaniya, 03(01): 63-85.