Jayatissa, R.L.N. Anda goviyange vartamana tattvaya pilibanda adhyayanayak - Colombo HARTI 2011 - xii, 78p. - Sinhala Paryesana varta anka 48 . ISBN: 9789556121308 Subjects--Topical Terms: ACTSAGRICULTURAL SYSTEMSSRI LANKA Dewey Class. No.: 306.349 / J19