Filtering by: Creator Abbas, Abdelaziz Yousif Mohamed Remove constraint Creator: Abbas, Abdelaziz Yousif Mohamed Type Thesis Remove constraint Type: Thesis Qualification name tesim phd Remove constraint Qualification name tesim: phd Resource type http://purl.org/coar/resource_type/c_db06 Remove constraint Resource type: http://purl.org/coar/resource_type/c_db06