SILICATES OF MAGNESIUM, ALUMINIUM, IRON ETC. (MINING)
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BTINORGANIC ECONOMIC MINERALS AND EARTHS (MINING)
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UDC622.367
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Descriptor GERSILIKATE DES MAGNESIUM, ALUMINIUMS, EISENS USW. (BERGBAU)
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Descriptor ENGSILICATES OF MAGNESIUM, ALUMINIUM, IRON ETC. (MINING)
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Descriptor FRESILICATES DE MAGNESIUM, ALUMINIUM, FER ETC. (INDUSTRIE MINIÈRE)
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NTASBESTOS (MINING)