Surathissa, D.M. පාරිසරික ජීව විද්යාව = paarasarika giiva vidyaava : a.po.sa (usas pela) giiva vidyaava nava nirdheeSHaya _12 - Nugegoda: Imashi Publishers, 2014. - 332p.; 21cm ISBN: 978-955-1771-76-8 Subjects--Topical Terms: Environmental Biology Dewey Class. No.: 577 / SUR