https://uomosul.edu.iq/libcentral/%d8%a7%d9%84%d9%83%d8%a7%d8%aa%d8%a8-%d9%88%d8%a7%d9%84%d9%85%d8%a4%d9%84%d9%81-%d8%a7%d8%b3%d8%a7%d9%85%d8%a9-%d8%ba%d8%a7%d9%86%d9%85-%d9%8a%d9%87%d8%af%d9%8a-%d8%a7%d9%84%d9%85%d9%83%d8%aa%d8%a8/