Jayathissa, W.A. මූලික සංඛ්යාන විද්යාව - 3 = mulika saKiyaana vidyaava -3 :anumithika saKiyaanaya - Nugegoda: Sarasavi Pub., 2016. - 423p.; 21cm ISBN: 978-955-31-0520-2 Subjects--Topical Terms: Statistics Dewey Class. No.: 519.5 / JAY