SILICATES, ANHYDROUS AMORPHOUS + GLAS, NATURAL + TEKTITES (MINERALOGY)
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BTAMORPHOUS SILICATES (MINERALOGY)
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UDC549.691.1
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Descriptor GERSILIKATE, WASSERFREIE AMORPHE + GLAS, NATÜRLICHES + TEKTITE (MINERALOGIE)
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Descriptor ENGSILICATES, ANHYDROUS AMORPHOUS + GLAS, NATURAL + TEKTITES (MINERALOGY)
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Descriptor FRESILICATES, ANHYDRES AMORPHES + VERRE, NATUREL + TECTITES (MINÉRALOGIE)
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Variant GERNATÜRLICHES GLAS (MINERALOGIE)
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Variant ENGNATURAL GLASSES (MINERALOGY)
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Variant FREVERRE NATUREL (MINÉRALOGIE)