Classification
510 - Mathematics
362
511 - General principles of mathematics
52
512 - Algebra
43
515 - Analysis
28
519 - Probabilities & applied mathematics
23
516 - Geometry
20
500 - Natural sciences & mathematics
13
620 - Engineering & allied operations
13
514 - Topology
8
530 - Physics
8
004 - Data processing & computer science
7
005 - Computer programming, programs & data
6
330 - Economics
5
332 - Financial economics
5
006 - Special computer methods
4
658 - General management
4
001 - Knowledge
3
003 - Systems
3
331 - Labor economics
3
384 - Communications; telecommunication
3
374 - Adult education
2
621 - Applied physics
2
910 - Geography & travel
2
111 - Ontology
1
145 - Sensationalism
1
245 - [Unassigned]
1
368 - Insurance
1
520 - Astronomy & allied sciences
1
531 - Classical mechanics; solid mechanics
1
533 - Gas mechanics
1
536 - Heat
1
541 - Physical chemistry
1
573 - Specific physiological systems in animals
1
624 - Civil engineering
1
629 - Other branches of engineering
1
745 - Decorative arts
1
781 - General principles & musical forms
1
793 - Indoor games & amusements
1
803 - Dictionaries & encyclopedias
1