History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s3.t4.11
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s3.t4.11
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v1.c17.s3.t4.11
The details clearly revealed the use of diamond drills in processing hard rock crystal artifacts at Arikamedu.