https://uomosul.edu.iq/libcentral/%d8%a7%d9%84%d8%af%d9%83%d8%aa%d9%88%d8%b1%d8%a9-%d8%a8%d9%8a%d8%a7%d9%86%d9%83%d8%a7-%d9%83%d9%84%d9%88%d8%b2%d9%86-%d9%88%d9%88%d9%81%d8%af-%d8%a8%d9%86%d9%83-%d8%a7%d9%84%d8%aa%d9%86%d9%85%d9%8a/