Sawasdee, V. 2021. Feasibility Study the Methane Production with Co-digestion between Napier grass in Degrade Land and Swine Manure. Journal of Applied Research on Science and Technology (JARST). 20, 1 (Feb. 2021), 1–8. DOI:https://doi.org/10.14456/rj-rmutt.2021.1.