Filtering by: Contributor Umm Al-Qura University Remove constraint Contributor: Umm Al-Qura University Creator Almahdi, Mohammad Abdullah Remove constraint Creator: Almahdi, Mohammad Abdullah Funder Umm Al-Qura University Remove constraint Funder: Umm Al-Qura University Resource type http://purl.org/coar/resource_type/c_db06 Remove constraint Resource type: http://purl.org/coar/resource_type/c_db06