VANADIUM-NIOBIUM-TANTALUM GROUP
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BTTRANSITION METALS/SCANDIUM TO NICKEL (CHEMICAL ELEMENTS)
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UDC546.88
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Descriptor GERVANADIUM-NIOB-TANTAL-GRUPPE
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Descriptor ENGVANADIUM-NIOBIUM-TANTALUM GROUP
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Descriptor FREGROPUE DE VANADIUM-NIOBIUM-TANTALE
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NTNIOBIUM (CHEMICAL ELEMENTS)
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NTTANTALUM (CHEMICAL ELEMENTS)
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NTVANADIUM (CHEMICAL ELEMENTS)