Sattraburut, T. . and Ratanasthien, B. . (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. Nakhon Pathom, Thailand, 20(1), pp. 96–109. available at: https://ph02.tci-thaijo.org/index.php/ennrj/article/view/245652 (accessed: 8 December 2025).