“Hydrometer Method Against Pipette Method for Estimating Soil Particle Size Distribution in Some Soil Types Selected from Central Sudan”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT 2, no. 2 (February 5, 2016): 16–32. Accessed May 11, 2024. https://ijerat.com/index.php/ijerat/article/view/100.