Ratchakun, Nattakarn, Yupa Thasod, and Benjavun Ratanasthien. 2026. “PETROGRAPHIC CHARACTERISTICS AND PETROLEUM POTENTIAL OF OIL SHALE FROM NA HONG BASIN, CHIANG MAI, THAILAND”. Suranaree Journal of Science and Technology 23 (4):443-51. https://ph04.tci-thaijo.org/index.php/SUJST/article/view/14307.