Monitoring Heavy Metal Pollution at Al-Buraihi Sewage Station in Taiz, Yemen using Napier Grass (Pennisetum Purpureum Schumach) as a Bioindicator. European Journal of Engineering Science and Technology, [S. l.], v. 4, n. 2, p. 14–33, 2021. DOI: 10.33422/ejest.v4i2.433. Disponível em: http://dpublication.com/journal/index.php/EJEST/article/view/433. Acesso em: 26 oct. 2025.