Capability of Pocket Penetrometer to Evaluate Unconfined Compressive Strength of Baghdad Clayey Soil. Al-Nahrain Journal for Engineering Sciences, [S. l.], v. 21, n. 1, p. 66–73, 2018. DOI: 10.29194/NJES21010066. Disponível em: https://nahje.com/nahje/article/view/423. Acesso em: 28 apr. 2026.