Atit Wannawek และผู้แต่งคนอื่นๆ. (2016) Removable Pb (II) from aqueous solutions by adsorption onto natural and modified leonardite. <i>KKU Engineering Journal</i>, <i>43</i>(S3), 477-479.Atit Wannawek และผู้แต่งคนอื่นๆ. "Removable Pb (II) from aqueous solutions by adsorption onto natural and modified leonardite". KKU Engineering Journal 43 (2016):477-479.Atit Wannawek และผู้แต่งคนอื่นๆ. Removable Pb (II) from aqueous solutions by adsorption onto natural and modified leonardite. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2016.