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Minerals and Metals in Ancient India v1.c12.s5.12

Minerals and Metals in Ancient India v1.c12.s5.12

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v1.c12.s5.12

| Silica | - | 49.59 per cent |
| Alumina | - | 15.27 per cent |
| Ferric oxide | - | 7.95 per cent |