Sunee Nithedpattarapong และ Surakitti Srikul; Chai Korawis; Jumpen Onthong. (1995) Influence of N, P, K and Mg on Yield of Oil Palm Grown on Kohong Soil Series. <i>Thai Agricultural Research Journal</i>, <i>13</i>(3), 164-174.Sunee Nithedpattarapong และ Surakitti Srikul; Chai Korawis; Jumpen Onthong. "Influence of N, P, K and Mg on Yield of Oil Palm Grown on Kohong Soil Series". Thai Agricultural Research Journal 13 (1995):164-174.Sunee Nithedpattarapong และ Surakitti Srikul; Chai Korawis; Jumpen Onthong. Influence of N, P, K and Mg on Yield of Oil Palm Grown on Kohong Soil Series. Department of Agriculture:ม.ป.ท. 1995.