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beer (50) 50
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general tagging of cross-sectional technologies spanning over several sections of the ipc (46) 46
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selection of materials for their conductive, insulating ordielectric properties (46) 46
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technologies or applications for mitigation or adaptation againstclimate change (46) 46
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obtaining oil, gas, water, soluble or meltable materials or aslurry of minerals from wells (44) 44
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china (40) 40
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