Wanmanee, S. . “Evaluation of Suitable Cassava Varieties on Group of Soil Series No.40 under Drought Area in Uttaradit Province”. VRU Agricultural and Food Journal, vol. 2, no. 2, Dec. 2023, pp. 13-19, https://li04.tci-thaijo.org/index.php/VRU_AFJ/article/view/7379.