MANUWA, S.; ALE, M. Estimation of penetration resistance and hydraulic conductivity of loamy soils in Akure south-western Nigeria for soil management practice. Nigerian Journal of Technological Development, [S. l.], v. 8, n. 2, p. 128–139, 2015. DOI: 10.4314/njtd.v8i2. Disponível em: https://www.ajol.info/index.php/njtd/article/view/117753. Acesso em: 14 oct. 2026.