Shormin, T., & Kibria, M. G. (2024). Effects of Biogas Digestate from Cowdung and Poultry Manure on Growth and Yield of Spinach (SpinaceaoleraceaL.). Chittagong University Journal of Biological Sciences, 9(1), 19–28. https://doi.org/10.3329/cujbs.v9i1.73762