NOBLE GASES ISOTOPES
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BTRARE GASES (CHEMICAL ELEMENTS)
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BTNON-METAL ISOTOPES
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UDC546.29%54.027
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Descriptor GEREDELGASISOTOPE
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Descriptor ENGNOBLE GASES ISOTOPES
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Descriptor FREISOTOPES DES GAZ RARES
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Variant GEREDELGAS-ISOTOPE
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Variant GERISOTOPE/EDELGASISOTOPE
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Variant ENGISOTOPES/NOBLE GASES ISOTOPES
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Variant FREGAZ RARES/ISOTOPES DES GAZ RARES
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Variant FREGAZ NOBLES/ISOTOPES DES GAZ NOBLES
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NTARGON/ISOTOPES
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NTHELIUM ISOTOPES
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NTKRYPTON ISOTOPES
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NTNEON ISOTOPES
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NTRADON ISOTOPES
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NTXENON ISOTOPES