Minerals and Metals in Ancient India v1.c11.s19.7
Minerals and Metals in Ancient India v1.c11.s19.7
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v1.c11.s19.7
The decline of the Indus Valley civilization was probably a gradual process, determined by the exhaustion of the soil, the drying up of the rivers, and even the exhaustion of the copper, lead, and tin, giving rise to the necessity for the importation of these metals from other areas.