Classification
005 - Computer programming, programs & data
5,371
004 - Data processing & computer science
3,227
006 - Special computer methods
1,148
620 - Engineering & allied operations
562
621 - Applied physics
345
658 - General management
277
500 - Natural sciences & mathematics
128
003 - Systems
110
518 - Numerical analysis
95
331 - Labor economics
73
629 - Other branches of engineering
70
670 - Manufacturing
57
330 - Economics
51
000 - Computer science, information & general works
50
794 - Indoor games of skill
44
650 - Management & auxiliary services
43
745 - Decorative arts
39
519 - Probabilities & applied mathematics
37
338 - Production
36
384 - Communications; telecommunication
36
371 - Schools & their activities; special education
29
025 - Library operations
25
300 - Social sciences
15
302 - Social interaction
15
380 - Commerce, communications & transportation
15
511 - General principles of mathematics
15
303 - Social processes
14
570 - Life sciences; biology
14
600 - Technology
14
333 - Economics of land & energy
11
512 - Algebra
11
700 - The arts; fine & decorative arts
11
610 - Medicine & health
10
001 - Knowledge
9
374 - Adult education
9
400 - Language
9
510 - Mathematics
9
720 - Architecture
9
140 - Specific philosophical schools
7
153 - Mental processes & intelligence
7
381 - Commerce
7
808 - Rhetoric & collections of literature
7
530 - Physics
6
550 - Earth sciences
6
515 - Analysis
5
910 - Geography & travel
5
343 - Military, tax, trade & industrial law
4
346 - Private law
4
531 - Classical mechanics; solid mechanics
4
576 - Genetics & evolution
4
more ...