View of the effective parts in Hodeidah on the requirements of transition to federal system in Tehama province "field study". مجلة أبحاث [Internet]. 2015 Jan. 1 [cited 2026 Sep. 30];3(3):81. Available from: https://ojs.abhath-ye.com/index.php/OJSABAHATH-YE/article/view/315