History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s5.16
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s5.16
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v1.c17.s5.16
Ball, V. : 1881, *A Manual of the Geology of India*, Part III, *Economic Geology*, Geological Survey of India, Calcutta.