Dr.D.Nath is presently holding the prestidgious Shri Shri Aniruddhadeva Chair Professorship in the Department of History, Dibrugarh University. Known for his work on the medieval history of Assam, Dr. Nath has to his credit a number of acclaimed research works in form of both books and articles on polity, society and culture of the Brahmaputra valley. He has also edited the work Opening of the Stilwell Road-Prospects and Problems. Dr. Nath is currently working on religion and religious societies in Assam with special reference to the Vaishnava movement and its institutions.