Classification
006 - Special computer methods
1,695
004 - Data processing & computer science
455
005 - Computer programming, programs & data
335
745 - Decorative arts
255
770 - Photography, photographs & computer art
214
000 - Computer science, information & general works
183
620 - Engineering & allied operations
174
302 - Social interaction
95
500 - Natural sciences & mathematics
91
518 - Numerical analysis
91
331 - Labor economics
87
794 - Indoor games of skill
70
003 - Systems
58
741 - Drawing & drawings
51
519 - Probabilities & applied mathematics
44
510 - Mathematics
43
621 - Applied physics
40
658 - General management
36
330 - Economics
35
777 - [Unassigned]
33
516 - Geometry
32
001 - Knowledge
27
384 - Communications; telecommunication
26
670 - Manufacturing
23
740 - Drawing & decorative arts
17
778 - Fields & kinds of photography
14
776 - Computer art (Digital art)
13
570 - Life sciences; biology
11
511 - General principles of mathematics
10
616 - Diseases
10
025 - Library operations
7
629 - Other branches of engineering
7
910 - Geography & travel
7
300 - Social sciences
6
374 - Adult education
6
380 - Commerce, communications & transportation
6
550 - Earth sciences
6
610 - Medicine & health
6
775 - Digital photography
6
791 - Public performances
6
381 - Commerce
5
542 - Techniques, equipment & materials
5
612 - Human physiology
5
686 - Printing & related activities
5
530 - Physics
4
604 - Special topics
4
771 - Techniques, equipment & materials
4
371 - Schools & their activities; special education
3
526 - Mathematical geography
3
541 - Physical chemistry
3
more ...