Samontha, Atitaya, and Thitipan Pinidanantachai. “Fractionation of Metals in Soil Surrounded Gold Mine at Phichit Province Using a Continuous-Flow Sequential Extraction”. Progress in Applied Science and Technology 7, no. 2 (December 27, 2017): 111–119. Accessed May 17, 2024. https://ph02.tci-thaijo.org/index.php/past/article/view/243067.