Effects of iron, manganese and zinc enriched coffee and tea wastes on lettuce – a field trial. COLUMELLA – Journal of Agricultural and Environmental Sciences, [S. l.], v. 4, n. 2, p. 17–26, 2017. DOI: 10.18380/SZIE.COLUM.2017.4.2.17. Disponível em: https://journal.uni-mate.hu/index.php/columella/article/view/2743. Acesso em: 21 nov. 2024.