Page:A History of Hindu Chemistry Vol 1.djvu/431

This page has been validated.

Copper Reducing Furnace at Khetri.
From Ball's Economic Geology of India. (See p. 140-41).

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:A_History_of_Hindu_Chemistry_Vol_1.djvu/431&oldid=7570864"