https://uomosul.edu.iq/libcentral/%d8%a7%d9%84%d9%85%d8%a4%d9%84%d9%81-%d8%a7%d9%84%d9%85%d9%81%d9%83%d8%b1-%d8%a7%d9%84%d8%a8%d8%a7%d8%ad%d8%ab-%d8%a7%d9%84%d9%81%d9%84%d8%b3%d9%81%d9%8a-%d8%b9%d9%84%d9%8a-%d9%85%d8%ad%d9%85%d8%af/