Classification
570 - Life sciences; biology
455
006 - Special computer methods
233
610 - Medicine & health
165
004 - Data processing & computer science
110
571 - Physiology & related subjects
66
572 - Biochemistry
66
616 - Diseases
52
005 - Computer programming, programs & data
40
612 - Human physiology
37
660 - Chemical engineering
36
621 - Applied physics
29
500 - Natural sciences & mathematics
26
000 - Computer science, information & general works
25
003 - Systems
25
620 - Engineering & allied operations
24
576 - Genetics & evolution
20
518 - Numerical analysis
19
530 - Physics
19
580 - Plants (Botany)
19
541 - Physical chemistry
18
615 - Pharmacology & therapeutics
18
519 - Probabilities & applied mathematics
17
333 - Economics of land & energy
16
579 - Microorganisms, fungi & algae
14
515 - Analysis
11
600 - Technology
11
629 - Other branches of engineering
11
700 - The arts; fine & decorative arts
11
363 - Other social problems & services
10
577 - Ecology
10
581 - Specific topics in natural history
10
630 - Agriculture & related technologies
10
025 - Library operations
8
560 - Paleontology; paleozoology
8
380 - Commerce, communications & transportation
7
550 - Earth sciences
6
330 - Economics
5
535 - Light & infrared & ultraviolet phenomena
5
590 - Animals (Zoology)
5
140 - Specific philosophical schools
4
542 - Techniques, equipment & materials
4
547 - Organic chemistry
4
720 - Architecture
4
001 - Knowledge
3
300 - Social sciences
3
511 - General principles of mathematics
3
540 - Chemistry & allied sciences
3
611 - Human anatomy, cytology & histology
3
614 - Incidence & prevention of disease
3
900 - History & geography
3
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