Ariyarathna, J.K.P. රසායන විද්යාවේ මූලධර්ම 1 = a.po.sa. usas peLa rasaayana vidhyaave mulaDHarma 1 - Pannipitiya: Stamfard Lake, 2005. - 349p.; 21cm ISBN: 9558156-19-1 Subjects--Topical Terms: Chandrens' Literature Dewey Class. No.: 540 / ARI