Citation | Khaliq, H., M. Younas, M. Sharif, S. Hussain, U. Younas, M. Sajid, Qudratullah, M.F. Khan, M. Usman and Q. Ullah. 2025. Comparative analysis of biogas production efficiency from anaerobic digestion of cow dung and mixed dung substrates. Sarhad Journal of Agriculture, 41(2): 881-893. DOI | https://dx.doi.org/10.17582/journal.sja/2025/41.2.881.893