Senevirathna, Thusitha ජීව විද්යාව = a.po.sa (usas pela) giiva vidyaava: praveeni vidyaava haa parinaamaya - Nugegoda: Agasara Publishers, - 100p.; 28cm ISBN: 978-955-0886-61-6 Subjects--Topical Terms: BiologyEducation Dewey Class. No.: 570.7 / SEN