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Des : 1

এপসম লবণ MgSO₄. 7H₂O

ব্লু ভিট্রিয়াল CuSO₄. 5H₂O

গ্রীণ ভিট্রিয়াল FeSO₄. 7H₂O

হোয়াইট ভিট্রিয়াল ZnSO₄. 7H₂O

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