Wanigatunga, Buddhi Ruwankith Sri Lamkave purana vari taksanaya - Horana Buddhi Ruwankith Wanigatunga 2002 - 40p. ISBN: 9789559785101 Subjects--Topical Terms: ANCIENT IRRIGATION SYSTEMS IN SRI LANKAIRRIGATION TECHNOLOGYWATER CONSERVATION Dewey Class. No.: 631.7 / W15