Al-Dulaimi Q, قصی. Studying the effect of the geometric shapes of the screen and the projection devices (Computers) in Amount of radiation change. EDUSJ [Internet]. 2007 Apr. 1 [cited 2025 Aug. 4];19(3):127-42. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17157