Karimov KS, Abid M, Islomov SI, Karimova NH, Al-Grafi MW. THE ECONOMICS OF BIOGAS PRODUCTION. IIUMEJ [Internet]. 2013 Nov. 19 [cited 2024 Apr. 19];14(2). Available from: https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/413