Classification
000 - Computer science, information & general works
1
001 - Knowledge
2
004 - Data processing & computer science
4
005 - Computer programming, programs & data
4
006 - Special computer methods
4
144 - Humanism & related systems
1
153 - Mental processes & intelligence
1
158 - Applied psychology
1
160 - Logic
2
300 - Social sciences
2
304 - Factors affecting social behavior
1
306 - Culture & institutions
2
330 - Economics
4
332 - Financial economics
1
370 - Education
1
384 - Communications; telecommunication
1
388 - Transportation; ground transportation
1
500 - Natural sciences & mathematics
2
510 - Mathematics
3
512 - Algebra
9
514 - Topology
2
515 - Analysis
23
516 - Geometry
2
518 - Numerical analysis
1
519 - Probabilities & applied mathematics
6
520 - Astronomy & allied sciences
3
530 - Physics
5
531 - Classical mechanics; solid mechanics
2
535 - Light & infrared & ultraviolet phenomena
1
537 - Electricity & electronics
1
539 - Modern physics
2
541 - Physical chemistry
2
546 - Inorganic chemistry
1
571 - Physiology & related subjects
1
600 - Technology
1
616 - Diseases
1
617 - Surgery & related medical specialties
1
620 - Engineering & allied operations
7
621 - Applied physics
6
629 - Other branches of engineering
1
650 - Management & auxiliary services
2
658 - General management
5
700 - The arts; fine & decorative arts
1
745 - Decorative arts
1