Jintana Klamtet และ Khaunjit Hemaviboon. (2020) Removal of Methylene Blue Dye from Aqueous Solution by Adsorption on Leonardite Char. <i>Naresuan University Journal: Science and Technology</i>, <i>28</i>(1), 82-93.Jintana Klamtet และ Khaunjit Hemaviboon. "Removal of Methylene Blue Dye from Aqueous Solution by Adsorption on Leonardite Char". Naresuan University Journal: Science and Technology 28 (2020):82-93.Jintana Klamtet และ Khaunjit Hemaviboon. Removal of Methylene Blue Dye from Aqueous Solution by Adsorption on Leonardite Char. Naresuan University Graduate School:ม.ป.ท. 2020.