Jayasooriya, J.E ජ්යෙෂ්ඨ ශිඝ්ර ජ්යාමිතිය = jeesta SHiigra jiyaamithiya - Colombo: Thanushi Pub., 2008. - 202p.; 21cm Subjects--Topical Terms: GeometryMathematics Dewey Class. No.: 516 / JAY