Classification
570 - Life sciences; biology
392
519 - Probabilities & applied mathematics
108
610 - Medicine & health
57
571 - Physiology & related subjects
52
515 - Analysis
51
003 - Systems
46
006 - Special computer methods
39
572 - Biochemistry
32
000 - Computer science, information & general works
29
577 - Ecology
28
005 - Computer programming, programs & data
23
530 - Physics
23
500 - Natural sciences & mathematics
22
576 - Genetics & evolution
21
612 - Human physiology
18
004 - Data processing & computer science
17
518 - Numerical analysis
14
615 - Pharmacology & therapeutics
14
616 - Diseases
14
620 - Engineering & allied operations
13
621 - Applied physics
12
630 - Agriculture & related technologies
11
502 - Miscellany
10
541 - Physical chemistry
9
516 - Geometry
8
658 - General management
8
330 - Economics
6
333 - Economics of land & energy
6
600 - Technology
6
614 - Incidence & prevention of disease
6
629 - Other branches of engineering
6
660 - Chemical engineering
6
510 - Mathematics
5
300 - Social sciences
4
535 - Light & infrared & ultraviolet phenomena
4
540 - Chemistry & allied sciences
4
580 - Plants (Botany)
4
140 - Specific philosophical schools
3
150 - Psychology
3
304 - Factors affecting social behavior
3
512 - Algebra
3
590 - Animals (Zoology)
3
599 - Mammals
3
611 - Human anatomy, cytology & histology
3
634 - Orchards, fruits & forestry
3
700 - The arts; fine & decorative arts
3
745 - Decorative arts
3
001 - Knowledge
2
353 - Specific fields of public administration
2
370 - Education
2
more ...