Muslim, D. et al. 2022. Problems and Difficulties Faced by Conventional University Teachers as a Result of Shifting from Face-to-Face to Virtual Teaching Mode during the Covid-19 Pandemic: An Empirical Evidence from Lahore. Human Nature Journal of Social Sciences. 3, 3 (Sep. 2022), 43–56. DOI:https://doi.org/10.71016/hnjss/prd4dq87.