Classification
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551 - Geology, hydrology & meteorology
2
577 - Ecology
2
621 - Applied physics
2
629 - Other branches of engineering
2
636 - Animal husbandry
2
005 - Computer programming, programs & data
1
020 - Library & information sciences
1
070 - News media, journalism & publishing
1
100 - Philosophy & psychology
1
158 - Applied psychology
1
300 - Social sciences
1
305 - Social groups
1
333 - Economics of land & energy
1
342 - Constitutional & administrative law
1
345 - Criminal law
1
363 - Other social problems & services
1
364 - Criminology
1
378 - Higher education
1
379 - Public policy issues in education
1
401 - Philosophy & theory
1
410 - Linguistics
1
501 - Philosophy & theory
1
509 - Historical, geographic & persons treatment
1
512 - Algebra
1
531 - Classical mechanics; solid mechanics
1
549 - Mineralogy
1
578 - Natural history of organisms
1
628 - Sanitary & municipal engineering
1
630 - Agriculture & related technologies
1
641 - Food & drink
1
650 - Management & auxiliary services
1
664 - Food technology
1
686 - Printing & related activities
1
796 - Athletic & outdoor sports & games
1
900 - History & geography
1
930 - History of ancient world to ca. 499
1