History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s3.t4.18
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s3.t4.18
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v1.c17.s3.t4.18
Auden et al (1942) estimated that the *reh* - infested districts of Utter Pradesh alone produced 0.5 m ton Na₂CO₃, 0.6 m ton NaHCO₃ and 0.3 m ton Na₂SO₄. Similar data from other states have been compiled by Brown and Dey (1955).