Sooksawad, A. and Pumchoei, K. 2004. Suitable Rice Variety and Fertilizer for Beneficial Return in Rainfed Lowland Coarse Texture Soils at Phitsanulok. Thai Agricultural Research Journal. 22, 3 (Dec. 2004), 205–216. DOI:https://doi.org/10.14456/thaidoa-agres.2004.16.