ALI, Sakhawat et al. Impact of Biogas Technology in the Development of Rural Population. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 14, n. 2, p. 10, june 2013. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/228>. Date accessed: 03 july 2022.