Chamlong Kogranm และ Boonguer Poosri. (1997) Effects of Calcium and Micronutrient Deficiencies on the Formation of Unfilled Pods in Peanut Grown in Yasothorn Province. <i>Thai Agricultural Research Journal</i>, <i>15</i>(3), 225-231.Chamlong Kogranm และ Boonguer Poosri. "Effects of Calcium and Micronutrient Deficiencies on the Formation of Unfilled Pods in Peanut Grown in Yasothorn Province". Thai Agricultural Research Journal 15 (1997):225-231.Chamlong Kogranm และ Boonguer Poosri. Effects of Calcium and Micronutrient Deficiencies on the Formation of Unfilled Pods in Peanut Grown in Yasothorn Province. Department of Agriculture:ม.ป.ท. 1997.