LAVA (GEOLOGY)
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BTVOLCANIC PRODUCTS, ASHES, GASES (GEOLOGY)
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UDC551.217.1
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Descriptor GERLAVA (GEOLOGIE)
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Descriptor ENGLAVA (GEOLOGY)
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Descriptor FRELAVE (GEOLOGIE)
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NTLAVA FLOW (GEOLOGY)
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NTPILLOW LAVA (GEOLOGY)