Jitnapa SIRIRAK และ Ployphat SUPPHARATTHANYA;Kedsarin CHANTHA;Sutinee GIRDTHEP;Supanee CHAYABUTRA. (2021) Eco-friendly lake pigment from sappanwood: Adsorption study and its application as natural colorant for natural rubber toy balloon. <i>Journal of Metals, Materials and Minerals</i>, <i>31</i>(2), 27-37.Jitnapa SIRIRAK และ Ployphat SUPPHARATTHANYA;Kedsarin CHANTHA;Sutinee GIRDTHEP;Supanee CHAYABUTRA. "Eco-friendly lake pigment from sappanwood: Adsorption study and its application as natural colorant for natural rubber toy balloon". Journal of Metals, Materials and Minerals 31 (2021):27-37.Jitnapa SIRIRAK และ Ployphat SUPPHARATTHANYA;Kedsarin CHANTHA;Sutinee GIRDTHEP;Supanee CHAYABUTRA. Eco-friendly lake pigment from sappanwood: Adsorption study and its application as natural colorant for natural rubber toy balloon. Metallurgy and Materials Science Research Institute Chulalongkorn University:ม.ป.ท. 2021.