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Some observations on tea in Japan
(The Tea Research Institute. Talawakele, 1968) Wickremasinghe, R.L.
By - products of tea
(Tea Research Institute. Thalawakele, 1972) Wickremasinghe, R.L.
The separation and identification of vitamin E in black tea
(The Tea Research Institute. Talawakele, 1966) Tirimanna, A.S.L.; Wickremasinghe, R.L.
Effect of ethephon, pure tea seed saponin, and partially purified tea root saponin on the growth of tea in the nursery and in the field
(Tea Research Institute. Thalawakele, 1974) Wickremasinghe, R.L.; Perera, K.P.W.C.; Munasinghe, T.A.