Minerals and Metals in Ancient India v1.c25.s6.28
Minerals and Metals in Ancient India v1.c25.s6.28
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v1.c25.s6.28
Auden et al. (1942) estimated that the reh-infested districts of UP 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).