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