Chantakul T, Chukaew A, Udompramuan C, Chaowiset W. Composition and Properties of Red Soil from Surat Thani for Developing Natural Color in Art. PKRU SciTech J. [internet]. 2025 Jun. 9 [cited 2025 Dec. 10];9(1):52-65. available from: https://ph01.tci-thaijo.org/index.php/pkruscitech/article/view/261508