620 - Engineering and allied operations 4,023
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650 - Management and auxiliary services 3,184
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630 - Agriculture and related technologies 1,972
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660 - Chemical engineering 832
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610 - Medicine and health 530
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690 - Construction of buildings 410
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640 - Home and family management 311
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670 - Manufacturing 215
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680 - Manufacture of products for specific uses 119
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600 - Technology (Applied sciences) 110
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330 - Economics 20
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550 - Earth sciences 13
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380 - Commerce, communications, transportation 12
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540 - Chemistry and allied sciences 7
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360 - Social problems and services; associations 4
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300 - Social sciences 3
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570 - Biology 3
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020 - Library and information sciences 2
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370 - Education 2
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910 - Geography and travel 2
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010 - Bibliography 1
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030 - General encyclopedic works 1
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090 - Manuscripts, rare books 1
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410 - Linguistics 1
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500 - Natural sciences and mathematics 1
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530 - Physics 1
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590 - Animals 1
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990 - History of other areas 1
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