Putro LHS. Emissions of CH4 and CO2 from Wastewater of Palm Oil Mills: A Real Contribution to Increase the Greenhouse Gas and Its Potential as Renewable Energy Sources: 10.32526/ennrj/20/202100149. Environ. Nat. Resour. J. [internet]. 2021 Nov. 25 [cited 2025 Dec. 7];20(1):61-72. available from: https://ph02.tci-thaijo.org/index.php/ennrj/article/view/245510