VOLCANIC SYSTEMS (GEOLOGY)
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BTVOLCANOES + VOLCANISM (GEOLOGY)
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UDC551.215
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Descriptor GERVULKANISCHE SYSTEME, SCHLOTE, RÖHREN, KRATER (GEOLOGIE)
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Descriptor ENGVOLCANIC SYSTEMS (GEOLOGY)
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Descriptor FRESYSTÈMES VOLCANIQUES, CHEMINÉES, CRATÈRES (GÉOLOGIE)
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NTCRATER + CALDERA (GEOLOGY)
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NTMUD VOLCANOES (GEOLOGY)
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NTVOLCANIC CHIMNEYS (GEOLOGY)
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NTVOLCANIC PIPES (GEOLOGY)