Rathnayke, R.M.S.N., Department of Forestry and Environmental Science, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
Ratnakumar, A., Department of Materials Science and Engineering, University of Moratuwa, Moratuwa, Sri Lanka
Ratnakumar, A., Department of Materials Science and Engineering, University of Moratuwa, Sri Lanka
Ratnasekera, D., Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Kamburupitiya, Sri Lanka
Ratnasekera, D., Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Sri Lanka
Ratnasekera, D., Faculty of Agriculture, University of Ruhuna, Sri Lanka Tel- ++94718232808, Fax- ++94412292382/4
Ratnasekera, Disna, Faculty of Agriculture, Mapalana, Sri Lanka.
Ratnasekera, Disna, Rice research and Development Institute, Bathalagoda, Sri Lanka.
Ratnasekera, W.A.D.P.R., Department of Agric. Biology, University of Ruhuna, Sri Lanka
Ratnasiri, N., Ceylon Petroleum Corporation, Colombo 09, Sri Lanka
Ratnasooriya, A.H.R., Department of Civil Engineering, University of Moratuwa, Katubedda, Sri Lanka
Ratnasooriya, W. D., Department of Zoology, University of Colombo,
Ratnasooriya, W.D., Department of Zoology, University of Colombo, Sri Lanka.
Ratnatilleke , A., Department of Chemistry, University of Kelaniya, Dalugama, Sri Lanka
Ratnaweera, D., Department of Chemistry, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
Ratnaweera, D.R., Department of Chemistry, University of Sri Jayewardenepura, Sri Lanka
Ratnaweera, P., Department of Zoology and Environment Sciences, University of Colombo, Sri Lanka
Ratnayake , A.S., Department of Applied Earth Sciences, Uva Wellassa University, Badulla, Sri Lanka
Ratnayake , A.S., Department of Applied Earth Sciences, Uva Wellassa University, Sri Lanka
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

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