Classification
004 - Data processing & computer science
1,821
005 - Computer programming, programs & data
1,721
006 - Special computer methods
903
621 - Applied physics
220
745 - Decorative arts
136
371 - Schools & their activities; special education
107
025 - Library operations
90
620 - Engineering & allied operations
86
140 - Specific philosophical schools
81
000 - Computer science, information & general works
78
629 - Other branches of engineering
70
658 - General management
68
610 - Medicine & health
67
303 - Social processes
57
003 - Systems
44
500 - Natural sciences & mathematics
42
700 - The arts; fine & decorative arts
33
600 - Technology
32
330 - Economics
29
331 - Labor economics
25
370 - Education
21
381 - Commerce
19
670 - Manufacturing
18
302 - Social interaction
17
374 - Adult education
14
384 - Communications; telecommunication
12
363 - Other social problems & services
11
338 - Production
10
400 - Language
10
100 - Philosophy & psychology
9
333 - Economics of land & energy
9
380 - Commerce, communications & transportation
9
410 - Linguistics
9
780 - Music
9
300 - Social sciences
8
650 - Management & auxiliary services
8
900 - History & geography
8
320 - Political science
7
612 - Human physiology
7
001 - Knowledge
6
794 - Indoor games of skill
6
301 - Sociology & anthropology
5
519 - Probabilities & applied mathematics
5
570 - Life sciences; biology
5
153 - Mental processes & intelligence
4
174 - Occupational ethics
4
660 - Chemical engineering
4
720 - Architecture
4
020 - Library & information sciences
3
306 - Culture & institutions
3
more ...