Shihab Ahmed Al-Hajjar A. Research Unit, Mosul University Central Library Its activities and services with a special reference to the direct contact search service. RADAB [Internet]. 2007 Sep. 1 [cited 2025 Sep. 10];37(47):121-32. Available from: https://edusj.uomosul.edu.iq/index.php/radab/article/view/33992