Kumara, Sharmini K Permanent Crop Clinic Programme An Evalution - Colombo Hector Kobbekaduwa Agrarian Research and Training Institute 2015 - [2],x,65 p. - Research Report No : 183 . ISBN: 9789556121902 Subjects--Topical Terms: AGRARIAN RESEARCHHARTIPAMPHLET BOX 138PERMANENT CROP