PEAT (PETROGRAPHY)
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BTCARBONIFEROUS ROCKS (PETROGRAPHY)
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UDC552.577
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Descriptor GERTORF (PETROGRAPHIE)
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Descriptor ENGPEAT (PETROGRAPHY)
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Descriptor FRETOURBE (PÉTROGRAPHIE)
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NTLOW-MOOR PEAT (PETROGRAPHY)
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NTHIGH MOOR PEAT (PETROGRAPHY)
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RTPEAT SOILS + BOG SOILS + SWAMPY SOILS (SOIL MECHANICS)