JAMSAI, C.; HOMCHAN, J. Effect of Sewage Sludge from Ubonratana Hospital on Maize (Zea mays L.). Thai Agricultural Research Journal, [S. l.], v. 23, n. 3, p. 252–262, 2005. DOI: 10.14456/thaidoa-agres.2005.21. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/211997. Acesso em: 1 oct. 2026.