Classification
519 - Probabilities & applied mathematics
29
616 - Diseases
20
610 - Medicine & health
10
006 - Special computer methods
9
571 - Physiology & related subjects
8
005 - Computer programming, programs & data
6
057 - Serials in Slavic languages
6
658 - General management
6
370 - Education
5
516 - Geometry
5
612 - Human physiology
5
615 - Pharmacology & therapeutics
5
306 - Culture & institutions
4
330 - Economics
3
339 - Macroeconomics & related topics
3
530 - Physics
3
620 - Engineering & allied operations
3
001 - Knowledge
2
004 - Data processing & computer science
2
040 - [Unassigned]
2
150 - Psychology
2
174 - Occupational ethics
2
301 - Sociology & anthropology
2
305 - Social groups
2
327 - International relations
2
338 - Production
2
418 - Standard usage & applied linguistics
2
500 - Natural sciences & mathematics
2
512 - Algebra
2
614 - Incidence & prevention of disease
2
617 - Surgery & related medical specialties
2
061 - Organizations in North America
1
062 - Organizations in British Isles; in England
1
158 - Applied psychology
1
300 - Social sciences
1
302 - Social interaction
1
320 - Political science
1
353 - Specific fields of public administration
1
363 - Other social problems & services
1
368 - Insurance
1
510 - Mathematics
1
515 - Analysis
1
518 - Numerical analysis
1
520 - Astronomy & allied sciences
1
539 - Modern physics
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
1
572 - Biochemistry
1
601 - Philosophy & theory
1
more ...