Qardash ا. أ.; Baabad م. ع. The use of chemical fertilizers in the cultivation of khat and its impact on the physical and chemical properties of soils in Al-Husain District, Al-Dhalaa- Yemen. University of Aden Journal of Natural and Applied Sciences, [S. l.], v. 24, n. 2, p. 345–356, 2020. DOI: 10.47372/uajnas.2020.n2.a04. Disponível em: https://uajnas.adenuniv.com/index.php/uajnas/article/view/83. Acesso em: 19 may. 2024.