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Institute of Physics Sri Lanka, Vidya Mandiraya, 120/10, Wijerama Mawatha, Colombo 7.

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Mr. N. Karthikeyan , Department of Physics, Open University of Sri Lanka, Nawala
Telephone: 94 11 2853777 Email: nkart@ou.ac.lk

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Dr. Susira Perera, Department of Physics, Open University of Sri Lanka, Nawala.
Telephone: 94 11 2853777 Email: vpper@ou.ac.lk

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Dr. S.R.D. Rosa, Department of Physics, University of Colombo.
Telephone: 94 11 2584777 Email: rosa@phys.cmb.ac.lk

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Dr. K.P.S.C. Jayaratne, Department of Physics, University of Colombo, Colombo 3.
Telephone: 94 11 2584777 Email: chandana@phys.cmb.ac.lk

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Dr. C.M. Edirisinghe, Department of Physics, University of Colombo, Colombo 3.
Telephone: 94 11 2584777 Email: mahesh@phys.cmb.ac.lk

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Prof. D. U. J. Sonnadara, Department of Physics, University of Colombo, Colombo 3.
Telephone: 91 11 2584777 Email: upul@phys.cmb.ac.lk

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Dr. R. V. Cooray, Department of Physics, University of Colombo, Colombo 3.
Telephone: 94 11 2584777 Email: ramal@phys.cmb.ac.lk

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