lapunt mallika-. Production of Biodiesel from Palm Oil Using Catalysts Derived from Local Shells in Loei Province. Indochin. Appl. Sci. [internet]. 2018 Aug. 28 [cited 2026 Jan. 8];7(2):282-7. available from: https://ph01.tci-thaijo.org/index.php/jmsae_ceae/article/view/115826