SHINGLE + PEBBLES + GRAVEL (MINING)
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BTINORGANIC ECONOMIC MINERALS AND EARTHS (MINING)
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UDC622.362.4
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Descriptor GERSCHOTTER + KIES (BERGBAU)
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Descriptor ENGSHINGLE + PEBBLES + GRAVEL (MINING)
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Descriptor FRECAILLOUX + GRAVIER (INDUSTRIE MINIÈRE)
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Variant GERKIES (BERGBAU)
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Variant ENGPEBBLES (MINING)
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NTGRAVEL PITS + SAND PITS (MINING)
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RTGRAVEL PITS + SAND PITS (MINING)