“Assessing Pre-Service Science Teachers Conception of Geometric Optics (Transmission of Light) in the Selected Special Science Colleges of Education in Ghana”. International Journal of Scientific Research and Management (IJSRM) 6, no. 06 (June 6, 2018): EL–2018. Accessed May 2, 2024. https://ijsrm.net/index.php/ijsrm/article/view/1536.