De Costa, M.S.N.L. Rhythm of Cascades : A Photographic Window of Selected Waterfalls in Sri Lanka - Author Ganemulla 2007 - [xxi], 264p. ill. 21 cm ; ISBN: 9789555023206 Nat. Bib. Agency Control No.: 551.484 COS Subjects--Topical Terms: දිය ඇලිWaterfalls Dewey Class. No.: 551.484 / COS