Sy Chinh, Le, Pham Anh Hung, & Phan Do Hung.
" Effect of Reflux Ratio on Piggery Wastewater Treatment Efficiency affer Bigogas Processing of Bio-filtration System Combined with Alternate Aeration." <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], 34.3 (2018): n. pag. Web. 24 Nov. 2024