Napassavong Rojanarowan และ Nattaporn Sookpom. (2015) Variation reduction of brightness and pH of pulp sent to a paper mill. <i>KKU Engineering Journal</i>, <i>42</i>(1), 51-60.Napassavong Rojanarowan และ Nattaporn Sookpom. "Variation reduction of brightness and pH of pulp sent to a paper mill". KKU Engineering Journal 42 (2015):51-60.Napassavong Rojanarowan และ Nattaporn Sookpom. Variation reduction of brightness and pH of pulp sent to a paper mill. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2015.