[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Minerals and Metals in Ancient India](https://indike.org/pramana/ins.science.biswas-1996) › v1.c19.s5.t5.5 # Minerals and Metals in Ancient India v1.c19.s5.t5.5 Minerals and Metals in Ancient India v1.c19.s5.t5.5 - **Language:** English ### [v1.c19.s5.t5.5](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.5) Fe₂O₃ → Fe₃O₄ → Fe - [Previous: v1.c19.s5.t5.4](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.4) - [Next: v1.c19.s5.t5.6](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.6) - [Up: v1.c19.s5.t5](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5) --- Source: [https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.5](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.5) · Pramāṇa