Perera, Athula සංයුක්ත ගණිතය : වීජ ගණිතය = aposa usas peLa sanyuktha gaNithaya- viija gaNithaya - Peradeniya : Author, 2006. - viii,282p.; 21cm ISBN: 955-98922-0-7 Subjects--Topical Terms: AlgebraCombined Mathematics Dewey Class. No.: 510 / PER