Domingo, E. K. F., & Florencondia, N. T. (2025). Geotechnical Evaluation of Sawdust-Derived Biochar as a Sustainable Stabilizer for Clayey Soils in Nueva Ecija. International Journal of Progressive Research in Science and Engineering, 6(11), 6–13. https://doi.org/10.65138/ijprse.2025.v6i11.1237