Geological map of India [cartographic material] / Geological Survey of India ; compiled by A.K. Dasgupta, A. Ghose and K.K. Chakraborty ; regional scrutiny by S.K. Mazumder ... [et al.].
Depth shown by gradient tints and isolines. "Data base upto 1988-89." "Basic data compiled from available published and unpublished geological maps, namely: regional maps, state maps on 1:1 million and 1:500,000 scales, Geological and Mineral Atlas of India on 1:1 million scale, beltwise and sectorwise maps on various scales, quadrangle geological maps and field maps of GSI."
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