NIOBIUM (CHEMICAL ELEMENTS)
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BTTRANSITION METALS/YTTRIUM TO PALLADIUM (CHEMICAL ELEMENTS)
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BTVANADIUM-NIOBIUM-TANTALUM GROUP
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UDC546.882
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Descriptor GERNIOB (CHEMISCHE ELEMENTE)
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Descriptor ENGNIOBIUM (CHEMICAL ELEMENTS)
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Descriptor FRENIOBIUM (ÉLÉMENTS CHIMIQUES)
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Variant GERCHEMISCHE ELEMENTE/NIOB
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Variant GERNB (NIOB)
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Variant ENGCHEMICAL ELEMENTS/NIOBIUM
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Variant ENGNB (NIOBIUM)
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Variant FRENB (NIOBIUM)
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NTNIOBIUM ISOTOPES
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NTNIOBIUM COMPOUNDS (INORGANIC CHEMISTRY)
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RTNIOBIUM (METALLURGY)