Ahmed NMM. Preliminary geological and geochemical study of clay at Al-Harur area, Abyan governorate, Yemen. Univ. Aden J. Nat. and Appl. Sc. [Internet]. 2019 Oct. 31 [cited 2025 Apr. 4];23(2):425-41. Available from: https://uajnas.adenuniv.com/index.php/uajnas/article/view/39