EXTRACTION OF LIQUID MINERALS IN GENERAL (MINING)
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BTLIQUID MINERAL EXTRACTION + GASEOUS MINERAL EXTRACTION (MINING)
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UDC622.321
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Descriptor GERGEWINNUNG FLÜSSIGER MINERALSTOFFE IM ALLGEMEINEN (BERGBAU)
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Descriptor ENGEXTRACTION OF LIQUID MINERALS IN GENERAL (MINING)
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Descriptor FREEXTRACTION DE MINERAIS LIQUIDES EN GÉNÉRAL (INDUSTRIE MINIÈRE)