BIOGASES (FUEL TECHNOLOGY)
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BTWASTE ENERGY RECOVERY + WASTE ENERGY UTILIZATION
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BTALTERNATIVE FUELS (FUEL TECHNOLOGY)
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BTNATURAL GASEOUS FUELS (FUEL TECHNOLOGY)
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UDC662.76*1*1
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Descriptor GERBIOGASE (BRENNSTOFFTECHNOLOGIE)
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Descriptor ENGBIOGASES (FUEL TECHNOLOGY)
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Descriptor FREBIOGAZ (TECHNOLOGIE DES COMBUSTIBLES)
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Variant GERGASE/BIOGASE (BRENNSTOFFTECHNOLOGIE)
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Variant GERGASES/BIOGASES (FUEL TECHNOLOGY)
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Variant FREGAZ/BIOGAZ (TECHNOLOGIE DES COMBUSTIBLES)
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NTLANDFILL GASES
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NTDIGESTER GAS UTILIZATION (WASTEWATER UTILIZATION)
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RTBIOGAS, BIOGENIC GASES (BIOCHEMISTRY)