A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.23
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.23
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v1.c13.23
Gairika: hematite, which is red and often hard, and limonite which is yellow or brown, both occur in the form of ochres.