Classification
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530 - Physics
2
539 - Modern physics
2
540 - Chemistry & allied sciences
41
542 - Techniques, equipment & materials
1
551 - Geology, hydrology & meteorology
30
570 - Life sciences; biology
5
571 - Physiology & related subjects
2
572 - Biochemistry
7
573 - Specific physiological systems in animals
1
574 - [Unassigned]
1
576 - Genetics & evolution
133
579 - Microorganisms, fungi & algae
1
580 - Plants (Botany)
202
581 - Specific topics in natural history
11
590 - Animals (Zoology)
1
600 - Technology
314
610 - Medicine & health
9,013
612 - Human physiology
187
613 - Personal health & safety
18
614 - Incidence & prevention of disease
16
615 - Pharmacology & therapeutics
58
616 - Diseases
104
617 - Surgery & related medical specialties
3
618 - Gynecology, obstetrics, pediatrics & geriatrics
9
620 - Engineering & allied operations
65
625 - Engineering of railroads & roads
1
628 - Sanitary & municipal engineering
6
629 - Other branches of engineering
3
630 - Agriculture & related technologies
15
631 - Techniques, equipment & materials
1
636 - Animal husbandry
1
641 - Food & drink
1
657 - Accounting
2
658 - General management
21
660 - Chemical engineering
7
681 - Precision instruments & other devices
1
700 - The arts; fine & decorative arts
678
720 - Architecture
1
780 - Music
2
800 - Literature & rhetoric
85
900 - History & geography
162
940 - History of Europe
1
956 - Middle East (Near East)
2