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Ritendra Krishna Bhattacharya did M.Tech. in Radio Physics and Electronics in 1968 from Calcutta University. He is a specialist in bio-medical engineering. He was involved in Academic Activities in Calcutta University, Jadavpur University and Bengal Engineering College. He is serving Vivekanand Nidhi (The Institute of Value Orientation and Environmental Education) as Trustee and General Secretary. He is a member of Board of Governors and Honorary Faculry of National Institute of Human Development. He is engaged in research on Values and Ecological Ethics. He is presently working on a project on Creating and Managing a Sustainable Community.

Lok Nath Soni did his M.A. in Anthropology from the Ravishankar University, Raipur (M.P.) in 1971 and Ph.D. from the same University in 1979. He has conducted fieldwork in Madhya Pradesh, Chattisgarh, Maharashtra, Goa, Gujarat and Rajasthan on various communities. He has published two books and over 50 research papers. Currently he is keeper in Central Museum of Anthropological Survey of India, Kolkata.