The Prehistory of Bhavnagar District , Saurashtra, Gujrat (with Professor H.D. Sankalia at Deccan College Research Institute, Pune)
1977 (October)-1979(March) Post-Doctoral Research on Acheulian Culture of Saurashtra, Western India at Deccan College  Research  Institute, (Under sponsorship of The University Grants Commission of India)Field Research
2000 - 2001 Exploration in North-east Bankura, West Bengal, Eastern India
2001 - 2002 Exploration in North-east Bankura, West Bengal, Eastern India
2001 - 2002 Trial Excavation at Maluti Sadar Ghat Acheulian Site in Birbhum, Eastern India
2002 - 2003 Exploration in West Bankura, West Bengal, Eastern India
2002 - 2003 Exploration at Basudih, Purulia, West Bengal, Eastern Indi Research Papers
2000 Recent Advances in Stone Age Archaeology in Mayurbhanj. In Archaeology of Orissa (K. Basa and P. Mohanty Eds.),
     PP.77 - 101. New Delhi : Prativa Prakashan
2000 Heritage and Public Awareness. Paper presented in a National Workshop on Conservation of Built Heritage held in Metcalfe Hall at Calcutta between January 29 and 30, 2000, organised by Action Research in Conservation of Heritage and Archaeological Survey of India, Calcutta Circle
2001 A Three Steps in Ambiguity Towards Linkage in Stone Age Archaeology in West Bengal. Paper presented in a National Seminar on Archaeology of Eastern India held at Konarak between April 5 and 7, 2001, organised by the Department of Anthropology, Utkal      University, Bhubaneswar
2001 Elephant and Man: A Bond of Three Million Years in History. Paper presented in a National Seminar held at Kolkata between  August 18 and 19, 2001, organised jointly by the Indian Museum, Calcutta and Pugmarks
2001 The Kalubhar Valley Lithic Component: A Case Study in Regional Typology. Paper presented in the XXIX Annual Conference of  the Indian Society for Prehistoric and Quaternary Studies held at Vadodara, organised by the M.S. University of Baroda
2001 (with Banani Bhattacharya) Further research in the Mesolithic Archaeology of North East Bankura, West Bengal. Paper  presented in the XXIX Annual Conference of the Indian Society for Prehistoric and Quaternary Studies held at Vadodara, organised by  the M.S. University of Baroda
2001 Prehistory in Bengal: Progress and Regress at the Close of the Twentieth Century. The Professor Dharani Sen Memorial Lecture held on the 8th June 2001 at Kolkata under the auspices of the Anthropological Society of India
2001 (with Banani Bhattacharya) Mesolithic Industry from Bankura. Puratattva (2000-2001) 31: 25 - 29 & 210
2002 Giuseppe Tucci: His Realm of Archaeological Adventure and Discovery in Trans-Himalaya. In Perspective of Buddhist Studies, Giueppe Tucci Birth Centenary Volume. (P. Jash Ed.), PP. 98 - 104. New Delhi : Kaveri Books
2002 (with Banani Bhattacharya) New Sites of Lower Acheulian in South West Bankura - A Preliminary Study. Paper presented in the   XXX Annual Conference of the Indian Society for Prehistoric and Quaternary Studies held at Ernakulam, organised by the State  Institute of Archaeology Hill Palace, Tripunithura
2003 Mesolithic Hunters gatherers: Bengal in Perspective. The Silver Jubilee volume of Eastern Regional Centre, Anthropological  Survey of India : (in Press)
2003 Archarology in Birbhum (In Press)