Mahmud, Md. Nahid, Nuzhat Tabassum Muniza, and Asif Ahmed. 2025. “Low-Cost Biochar: A Sustainable Approach to Improve Soil Fertility and Crop Yield for Small-Scale Farmers”. American Journal of Environmental Economics 4 (1): 67-72. https://doi.org/10.54536/ajee.v4i1.4613.