NITROGEN ISOTOPES
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BTNON-METAL ISOTOPES
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BTNITROGEN (CHEMICAL ELEMENTS)
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UDC546.17%54.027
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Descriptor GERSTICKSTOFFISOTOPE
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Descriptor ENGNITROGEN ISOTOPES
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Descriptor FREISOTOPES DE L'AZOTE
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Variant GERSTICKSTOFF-ISOTOPE
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Variant GERISOTOPE/STICKSTOFFISOTOPE
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Variant ENGISOTOPES/NITROGEN ISOTOPES
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Variant FREAZOTE/ISOTOPES DE L'AZOTE
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NTNITROGEN-14-ISOTOPE
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NTNITROGEN-15-ISOTOPE