Saleem, H.D., Aldefae, A.H. and Humaish, W.H. 2021. Verification of strength resistance of sandy soil using small scale penetrometer tests. Scientific Review Engineering and Environmental Sciences (SREES). 30, 2 (Mar. 2021), 304–314. DOI:https://doi.org/10.22630/PNIKS.2021.30.2.26.