Dr. Archana Datta is a retired Research Associate of Anthropological Survey of India. She achieved M.A. and Ph.D. degree in Geography. She has carried out extensive fieldwork in West Bengal, Bihar and Sikkim and published a few books as co – author. She has a number of articles in different journals and books. Dr. Subhash Chandra Datta is a retired Officer of National Atlas and Thematic Mapping Organisation. He achieved M.A. and Ph.D degree in Geography. He published a number of thematic maps and a few articles in journals. Amitava Datta is an M.Tech Engineer. He works in the field of software industry in the USA.