автор: Sangita Agarwal

Dr. Ramesh Oraon is an Assistant Professor, Central University of Jharkhand, Ranchi, Jharkhand, India. Dr. Pardeep Singh is an Assistant professor, Department of Environmental Science, PGDAV College University of Delhi, New Delhi, India. Dr. Sanchayita Rajkhowa is an Assistant Professor, Department of Chemistry, Haflong Government College, Assam, India. Dr. Sangita Agarwal is an Associate Professor, Department of Applied Science, RCC Institute of Information Technology, Kolkata, West Bengal. Dr. Ravindra Pratap Singh is currently working as a Chief Engineer in the Central Public Works Department (CPWD), Government of India.