Classification
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400 - Language
13
407 - Education, research & related topics
1
410 - Linguistics
2
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
135
510 - Mathematics
13
511 - General principles of mathematics
2
512 - Algebra
1
514 - Topology
1
515 - Analysis
3
518 - Numerical analysis
3
519 - Probabilities & applied mathematics
71
530 - Physics
18
535 - Light & infrared & ultraviolet phenomena
1
539 - Modern physics
2
540 - Chemistry & allied sciences
4
550 - Earth sciences
3
551 - Geology, hydrology & meteorology
15
570 - Life sciences; biology
15
572 - Biochemistry
1
576 - Genetics & evolution
17
577 - Ecology
1
580 - Plants (Botany)
14
581 - Specific topics in natural history
4
600 - Technology
92
610 - Medicine & health
56
612 - Human physiology
2
615 - Pharmacology & therapeutics
8
616 - Diseases
1
617 - Surgery & related medical specialties
1
620 - Engineering & allied operations
113
621 - Applied physics
101
624 - Civil engineering
1
625 - Engineering of railroads & roads
1
629 - Other branches of engineering
13
630 - Agriculture & related technologies
12
634 - Orchards, fruits & forestry
1
647 - Management of public households
1
650 - Management & auxiliary services
7
651 - Office services
1
657 - Accounting
8
658 - General management
293
664 - Food technology
1
665 - Industrial oils, fats, waxes & gases
1
670 - Manufacturing
26
687 - Clothing & accessories
1
690 - Buildings
2
700 - The arts; fine & decorative arts
97
710 - Civic & landscape art
1
720 - Architecture
15
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