A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.s1.7
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.s1.7
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v1.c13.s1.7
“In two localities lumps of alum...occur naturally in sufficient abundance to be a regular article of export.