Pérez Tirado, A. J., Quiac Huaccha, V. L., Flores Ramos, D. M., Chilon Chalan, K. J., & Tingal Herrera, J. F. (2026). COMPARISON OF THE DENSITY OF SANDY SOIL BY ADDING PINE SEED ASH (3%, 6% AND 9%), BY PROCTOR TEST. LACCEI, 1(14). https://doi.org/10.18687/LACCEI2026.1.1.2136