A Study of Communication Barriers in Open Distance Learning System of Education: Samra Anjum1 Rahmat Ullah Bhatti2 Muhammad Javed Iqbal3. PJDOL [Internet]. 2023 Feb. 9 [cited 2024 May 9];6(1). Available from: https://ojs.aiou.edu.pk/index.php/pjdol/article/view/343