By Sunanda Maheendra.

By Ruwan Jayathunga.

By Leela Perumadura.

By prof Siril Ponnapperuma

By Channa Bandara Dolapihilla.

By Hemasiri Kumaranathunge

By Hemasiri Kumarathunga

By Indrani Perera

By A.Chandradasa.

By J.B.Disanayaka.