Classification
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530 - Physics
2
532 - Fluid mechanics; liquid mechanics
1
534 - Sound & related vibrations
1
539 - Modern physics
1
540 - Chemistry & allied sciences
1
541 - Physical chemistry
1
543 - Analytical chemistry
1
550 - Earth sciences
2
551 - Geology, hydrology & meteorology
4
570 - Life sciences; biology
1
571 - Physiology & related subjects
1
572 - Biochemistry
1
576 - Genetics & evolution
1
577 - Ecology
6
580 - Plants (Botany)
1
600 - Technology
4
610 - Medicine & health
30
613 - Personal health & safety
4
614 - Incidence & prevention of disease
4
615 - Pharmacology & therapeutics
3
616 - Diseases
15
617 - Surgery & related medical specialties
5
618 - Gynecology, obstetrics, pediatrics & geriatrics
3
620 - Engineering & allied operations
46
621 - Applied physics
29
624 - Civil engineering
1
628 - Sanitary & municipal engineering
1
629 - Other branches of engineering
8
630 - Agriculture & related technologies
4
634 - Orchards, fruits & forestry
2
641 - Food & drink
2
650 - Management & auxiliary services
2
657 - Accounting
2
658 - General management
32
659 - Advertising & public relations
2
660 - Chemical engineering
7
664 - Food technology
2
665 - Industrial oils, fats, waxes & gases
2
670 - Manufacturing
8
745 - Decorative arts
5
780 - Music
1
791 - Public performances
1
808 - Rhetoric & collections of literature
1
820 - English & Old English literatures
3
900 - History & geography
4
910 - Geography & travel
5
930 - History of ancient world to ca. 499
1
940 - History of Europe
1