Jayatissa, R.L.N. Dissanayake, A.K.A Perera, M.Dilini D. Importance of indigenous knowledge for food security : in relation to paddy cultivation - Colombo : Hector Kobbekaduwa Agrarian Research and Training Institute, 2019. - viii, 82 p. ISBN: 9789556122558 Subjects--Topical Terms: Food security Dewey Class. No.: 363.8 / JAY