Sattraburut, Thunyapat, and Benjavun Ratanasthien. 2021. “Maceral Association in Coal-Bearing Formation of Mae Than Coal Mine in Lampang, Thailand - Implication for Depositional Environment: 10.32526/Ennrj/20/202100166”. Environment and Natural Resources Journal 20 (1). Nakhon Pathom, Thailand:96-109. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/245652.