Ratnayake , A.S., Department of Applied Earth Sciences, Uva Wellassa University, Sri Lanka
Ratnayake, A.S., Department of Applied Earth Sciences, Faculty of Applied Sciences, Uva Wellassa University, Badulla, Sri Lanka
Ratnayake, A.S., Faculty of Science and Technology, Uva Wellassa University, Badulla, Sri Lanka
Ratnayake, B.R.M.N., Department of Marketing Management University of Sri Jayewardenepura, Sri Lanka
Ratnayake, B.R.M.N., Department of Marketing, University of Sri Jayewardenapura, Sri Lanka
Ratnayake, B.R.M.N., Lecturer, Dept. of Marketing Management, University of Sri Jayewardenepura, (Sri Lanka)
Ratnayake, CD, Faculty of Medical Sciences , University of Sri Jayewardenepura
Ratnayake, Iraj
Ratnayake, M. D., Department of English Language Teaching, University of Sri Jayewardenepura, Sri Lanka
Ratnayake, M.P., University of Visual and Performing Arts Colombo
Ratnayake, N., Department of Civil Engineering, University of Moratuwa
Ratnayake, N., IUCN - The World Cnservation Union
Ratnayake , N.P., Ocean University, Mattakkuliya, Sri Lanka
Ratnayake, P. G. D., 0pen University of Sri Lanka
Ratnayake, P. Upali, Sri Lanka Tourism Development Authority, Sri Lanka.
Ratnayake, R. H. M. K., Department of Horticulture and Landscape Gardening, Wayamba University of Sri Lanka, Sri Lanka
Ratnayake, R. H. M. K., Department of Horticulture and Landscape Gardening, Wayamba University of Sri Lanka, Sri Lanka.
Ratnayake, R. H. M. K., Oepanment of Horticulture and Landscape Gardening, Wayamba University of Sri Lanka, Sri Lanka
Ratnayake, R. L., Department of Geography, University of Kelaniya, Sri Lanka
Ratnayake, R. M. C. S., Department of Botany, University of Kelaniya
Ratnayake , R.H.M.K., Wayamba University, Makandura, Sri Lanka
Ratnayake , R.M.C.S., University of Kelaniya, Dalugama, Sri Lanka
Ratnayake, R.M.K, Department of Geography University of Sri Jayewardenepura Sri Lanka
Ratnayake, R.M.M.A., Department of Horticulture and Landscape Gardening, Wayamba University of Sri Lanka
Ratnayake, R.M.T.S.

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