%0 Journal Article %T Effect of Different Ratio Peracetic Acid Bleaching on Colour Changing of Spruce Wood and Beech Wood %A BOZDOÄžAN BALÇIK, Ã. %A ÖZDEMİR, T. %J Sigma Journal of Engineering and Natural Sciences %D 2019 %V 10 %P 11-18 %R