Kariyawasam, C. නව අධ්යාපන මූලධර්ම = Nava adhyaapana muladharma - Kottawa: Sara, 2016. - 152p.; 21 cm. ISBN: 978-955-584-542-7 Subjects--Topical Terms: Principles of Education Dewey Class. No.: 370.1 / KAR