KASSIM, J. K. Method for Estimation of Calcium Carbonate in Soils from Iraq. International Journal of Environment, [S. l.], v. 1, n. 1, p. 9–19, 2013. DOI: 10.3126/ije.v1i1.8524. Disponível em: https://www.nepjol.info/index.php/IJE/article/view/8524. Acesso em: 15 jun. 2024.