History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t8.13
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t8.13
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v1.c13.s2.t8.13
(ii) Improvement in the physical properties such as strength, hardness etc.