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Item Recent developments in the control of poria root disease(The Tea Research Institute. Talawakele, 1964) Shanmuganathan, N.Item A leaf spot disease of Crotalaria spp(Tea Research Institute. Thalawakele, 1970) Shanmuganathan, N.Item An experiment on the control of maintenance-leaf fall by certain sanitary measures(The Tea Research Institute. Talawakele, 1964) Shanmuganathan, N.; Redlich, W.W.Item Studies on collar and branch canker disease of young tea (Phomopsis theae Petch)(Tea Research Institute. Thalawakele, 1972) Shanmuganathan, N.; Bopearatchy, R.N.Item Further observations on the oil spot disease of tea(The Tea Research Institute. Talawakele, 1963) Shanmuganathan, N.; Mulder, D.Item Studies in collar and branch canker of young tea (phomopsis theae petch) 1 recent observations on disease incidence(The Tea Research Institute. Talawakele, 1966) Shanmuganathan, N.; Rodrigo, W.R.F.Item Laboratory and greenhouse evaluation of some soil fumigants for toxicity against five root pathogens of tea(The Tea Research Institute. Talawakele, 1969) Shanmuganathan, N.; Fernando, S.R.A.