Classification
515 - Analysis
49
519 - Probabilities & applied mathematics
47
510 - Mathematics
26
620 - Engineering & allied operations
20
530 - Physics
19
006 - Special computer methods
16
005 - Computer programming, programs & data
15
330 - Economics
12
500 - Natural sciences & mathematics
12
621 - Applied physics
12
003 - Systems
10
518 - Numerical analysis
10
004 - Data processing & computer science
8
512 - Algebra
8
658 - General management
8
300 - Social sciences
7
531 - Classical mechanics; solid mechanics
7
629 - Other branches of engineering
7
520 - Astronomy & allied sciences
5
570 - Life sciences; biology
5
001 - Knowledge
4
516 - Geometry
4
153 - Mental processes & intelligence
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
384 - Communications; telecommunication
3
511 - General principles of mathematics
3
551 - Geology, hydrology & meteorology
3
577 - Ecology
3
670 - Manufacturing
3
332 - Financial economics
2
501 - Philosophy & theory
2
534 - Sound & related vibrations
2
541 - Physical chemistry
2
624 - Civil engineering
2
671 - Metalworking & primary metal products
2
020 - Library & information sciences
1
050 - General serial publications
1
150 - Psychology
1
160 - Logic
1
302 - Social interaction
1
306 - Culture & institutions
1
331 - Labor economics
1
353 - Specific fields of public administration
1
368 - Insurance
1
388 - Transportation; ground transportation
1
526 - Mathematical geography
1
550 - Earth sciences
1
553 - Economic geology
1
571 - Physiology & related subjects
1
more ...