Classification
515 - Analysis
1,246
519 - Probabilities & applied mathematics
193
510 - Mathematics
117
616 - Diseases
114
571 - Physiology & related subjects
102
530 - Physics
92
512 - Algebra
81
572 - Biochemistry
60
514 - Topology
48
620 - Engineering & allied operations
48
003 - Systems
39
511 - General principles of mathematics
38
580 - Plants (Botany)
38
006 - Special computer methods
34
612 - Human physiology
34
518 - Numerical analysis
33
004 - Data processing & computer science
32
516 - Geometry
31
570 - Life sciences; biology
29
621 - Applied physics
27
610 - Medicine & health
26
300 - Social sciences
24
001 - Knowledge
23
579 - Microorganisms, fungi & algae
21
629 - Other branches of engineering
20
615 - Pharmacology & therapeutics
19
000 - Computer science, information & general works
15
333 - Economics of land & energy
15
700 - The arts; fine & decorative arts
15
005 - Computer programming, programs & data
14
330 - Economics
13
500 - Natural sciences & mathematics
13
576 - Genetics & evolution
12
660 - Chemical engineering
11
600 - Technology
9
658 - General management
9
531 - Classical mechanics; solid mechanics
8
617 - Surgery & related medical specialties
8
155 - Differential & developmental psychology
6
541 - Physical chemistry
6
670 - Manufacturing
6
370 - Education
5
599 - Mammals
5
611 - Human anatomy, cytology & histology
5
614 - Incidence & prevention of disease
5
900 - History & geography
5
153 - Mental processes & intelligence
4
363 - Other social problems & services
4
517 - [Unassigned]
4
539 - Modern physics
4
more ...