CHALCOGENS (CHEMICAL ELEMENTS)
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BTNON-METALS (CHEMICAL ELEMENTS)
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UDC546.2
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Descriptor GERCHALCOGENE (CHEMISCHE ELEMENTE)
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Descriptor ENGCHALCOGENS (CHEMICAL ELEMENTS)
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Descriptor FRECHALCOGÈNES (ÉLÉMENTS CHIMIQUES)
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Variant GERNICHTMETALLE DER 6.GRUPPE (CHEMISCHE ELEMENTE)
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Variant GERCHALKOGENE (CHEMISCHE ELEMENTE)
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Variant ENGNON-METALS OF THE 6TH GROUP (CHEMICAL ELEMENTS)
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Variant FRENON-MÉTAUX/GROUPE 6 (ÉLÉMENTS CHIMIQUES)
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NTCHALCOGEN COMPOUNDS (INORGANIC CHEMISTRY)
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NTOXYGEN (CHEMICAL ELEMENTS)
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NTSULFUR (CHEMICAL ELEMENTS)
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NTSELENIUM (CHEMICAL ELEMENTS)
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NTTELLURIUM (CHEMICAL ELEMENTS)