Classification
794 - Indoor games of skill
550
745 - Decorative arts
323
005 - Computer programming, programs & data
180
006 - Special computer methods
141
000 - Computer science, information & general works
115
004 - Data processing & computer science
99
500 - Natural sciences & mathematics
79
620 - Engineering & allied operations
47
302 - Social interaction
45
658 - General management
42
331 - Labor economics
36
330 - Economics
27
384 - Communications; telecommunication
26
600 - Technology
25
300 - Social sciences
23
700 - The arts; fine & decorative arts
21
370 - Education
20
781 - General principles & musical forms
19
791 - Public performances
19
793 - Indoor games & amusements
19
338 - Production
17
381 - Commerce
15
621 - Applied physics
15
371 - Schools & their activities; special education
14
380 - Commerce, communications & transportation
13
900 - History & geography
13
100 - Philosophy & psychology
12
374 - Adult education
12
800 - Literature & rhetoric
12
153 - Mental processes & intelligence
11
306 - Culture & institutions
11
510 - Mathematics
11
363 - Other social problems & services
10
400 - Language
10
610 - Medicine & health
9
140 - Specific philosophical schools
8
303 - Social processes
7
320 - Political science
7
333 - Economics of land & energy
7
629 - Other branches of engineering
7
741 - Drawing & drawings
7
770 - Photography, photographs & computer art
7
777 - [Unassigned]
7
780 - Music
7
410 - Linguistics
5
518 - Numerical analysis
5
670 - Manufacturing
5
808 - Rhetoric & collections of literature
5
155 - Differential & developmental psychology
4
364 - Criminology
4
more ...