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2. Tectonic Map of India and adjoining countries, 1:7.5 M;Acharyya,1999
3. Geological and Mineral Map of North East India, 1:2 M;Anon,1998
4. Break up of Australia-India-Madagascar block, opening of the Indian Ocean and continental accretion in southeast Asia with special reference to the characteristics of the peri-Indian collision zones;Acharyya;Gondwana Res.,2000