KAKAR, Z.- ul- haq .; PARVEEN, S. .; KHATTAK, S. G. .; SALEEM, Z. . Effect of Different Types of Surfectants on Zinc Efficiency in Spinach Yield. International Journal of Sustainable Agricultural Research, [S. l.], v. 1, n. 2, p. 45–51, 2014. Disponível em: https://archive.conscientiabeam.com/index.php/70/article/view/211. Acesso em: 3 jul. 2024.