“Heavy Metals and Yield of Cowpea Cultivated under Composted Tannery Sludge Amendment”. Acta Scientiarum. Agronomy 36, no. 4 (abril 16, 2014): 443–448. Acesso em maio 31, 2026. https://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18094.