Mohit Gangwar, Brijesh Kumar Ojha, Himanshu Kumar Shukla, Aditya Pratap Singh, Rohit Srivastava, Sapna Singh. (2020). Covid 19: A Challenging Situation for the World. International Journal of Advanced Science and Technology, 29(05), 12373-12382. Retrieved from http://sersc.org/journals/index.php/IJAST/article/view/25830