Edem, I. E., & Adebimpe, O. A. . (2024). A Taguchi fractional factorial design approach to assessing Cattle-Poultry-Hog manure mix ratio influences on biogas yield. Engineering and Applied Science Research, 51(3), 419–433. retrieved from https://ph01.tci-thaijo.org/index.php/easr/article/view/255284