P.S., Bhindhu; P., Sureshkumar. Availability indices of calcium and magnesium in soils of Kerala. Journal of Tropical Agriculture, [S. l.], v. 59, n. 1, 2021. Disponível em: https://jtropag.kau.in/index.php/ojs2/article/view/1067. Acesso em: 29 apr. 2024.