FESTES HELIUM
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BTFESTER ZUSTAND (CHEMIE)
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BTHELIUM (CHEMISCHE ELEMENTE)
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UDC546.291-15
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Descriptor GERFESTES HELIUM
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Descriptor ENGSOLID HELIUM
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Descriptor FREHÉLIUM SOLIDE
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Variant GERHELIUM/FESTES HELIUM
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Variant ENGHELIUM/SOLID HELIUM