Patchanee Chaiyawat. (2004) Damages of Brown Planthopper, Nilaparvata lugen (StษฟI) on Non Photosensitive Certified Rice varieties in the Eastern Region. <i>Thai Agricultural Research Journal</i>, <i>22</i>(1), 39-48.Patchanee Chaiyawat. "Damages of Brown Planthopper, Nilaparvata lugen (StษฟI) on Non Photosensitive Certified Rice varieties in the Eastern Region". Thai Agricultural Research Journal 22 (2004):39-48.Patchanee Chaiyawat. Damages of Brown Planthopper, Nilaparvata lugen (StษฟI) on Non Photosensitive Certified Rice varieties in the Eastern Region. Department of Agriculture:ม.ป.ท. 2004.