Somphob Jongruaysup และ Damri Thavornmas; Udom Rattanarak. (2002) Appropriate Nitrogen and Filter Cake Rates for Sugarcane Grown on Various Soils in Sa Kaeo Province. <i>Thai Agricultural Research Journal</i>, <i>20</i>(3), 275-284.Somphob Jongruaysup และ Damri Thavornmas; Udom Rattanarak. "Appropriate Nitrogen and Filter Cake Rates for Sugarcane Grown on Various Soils in Sa Kaeo Province". Thai Agricultural Research Journal 20 (2002):275-284.Somphob Jongruaysup และ Damri Thavornmas; Udom Rattanarak. Appropriate Nitrogen and Filter Cake Rates for Sugarcane Grown on Various Soils in Sa Kaeo Province. Department of Agriculture:ม.ป.ท. 2002.