Classification
000 - Computer science, information & general works
331 - Labor economics
125
745 - Decorative arts
115
658 - General management
93
700 - The arts; fine & decorative arts
72
500 - Natural sciences & mathematics
71
600 - Technology
65
333 - Economics of land & energy
64
330 - Economics
63
620 - Engineering & allied operations
60
363 - Other social problems & services
48
610 - Medicine & health
46
770 - Photography, photographs & computer art
36
006 - Special computer methods
32
374 - Adult education
31
384 - Communications; telecommunication
29
380 - Commerce, communications & transportation
28
540 - Chemistry & allied sciences
23
900 - History & geography
23
140 - Specific philosophical schools
21
741 - Drawing & drawings
21
580 - Plants (Botany)
19
720 - Architecture
18
530 - Physics
17
791 - Public performances
17
576 - Genetics & evolution
15
300 - Social sciences
14
370 - Education
12
320 - Political science
11
340 - Law
11
381 - Commerce
10
551 - Geology, hydrology & meteorology
10
800 - Literature & rhetoric
10
338 - Production
9
100 - Philosophy & psychology
8
777 - [Unassigned]
8
414 - Phonology & phonetics
7
630 - Agriculture & related technologies
7
302 - Social interaction
6
332 - Financial economics
6
581 - Specific topics in natural history
6
400 - Language
5
410 - Linguistics
5
170 - Ethics
4
510 - Mathematics
4
519 - Probabilities & applied mathematics
4
612 - Human physiology
4
781 - General principles & musical forms
4
001 - Knowledge
3
011 - Bibliographies
3
more ...