Jitnapa SIRIRAK และ Nattawan WORAWANNOTAI; Cheewita SUWANCHAWALIT; Supanee CHAYABUTRA. (2020) Preparation and characterization of lake pigments from sappan wood using Thai local clays. <i>Journal of Metals Materials and Minerals</i>, <i>30</i>(1), 20-28.Jitnapa SIRIRAK และ Nattawan WORAWANNOTAI; Cheewita SUWANCHAWALIT; Supanee CHAYABUTRA. "Preparation and characterization of lake pigments from sappan wood using Thai local clays". Journal of Metals Materials and Minerals 30 (2020):20-28.Jitnapa SIRIRAK และ Nattawan WORAWANNOTAI; Cheewita SUWANCHAWALIT; Supanee CHAYABUTRA. Preparation and characterization of lake pigments from sappan wood using Thai local clays. Metallurgy and Materials Science Research Institute Chulalongkorn University:ม.ป.ท. 2020.