Ratnayake, B.R.M.N., Department of Marketing, University of Sri Jayewardenapura, Sri Lanka
Ratnayake, M. D., Department of English Language Teaching, University of Sri Jayewardenepura, Sri Lanka
Rewathy, K. , Department of Geography, University of Colombo, Sri Lanka
Rohanadeera, M.
Rohanadeera, M., Department of History and Archaeology University of Sri Jayawardenepura, Sri Lanka.
Rohanadeera, M., Dept. of History and Archaeology, University of Sri Jayewardenapura, Sri Lanka
Rohanadeera, Mendis., Department of History and Archaeology, University of Sri Jayewardenapura, Sri Lanka
Rukshan, D. G. R. N., Department of Public Policy, University of Ruhuna Sri Lanka

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