Classification
100 - Philosophy & psychology
600 - Technology
300 - Social sciences
62
700 - The arts; fine & decorative arts
62
900 - History & geography
51
370 - Education
49
620 - Engineering & allied operations
46
000 - Computer science, information & general works
42
170 - Ethics
41
140 - Specific philosophical schools
39
320 - Political science
39
610 - Medicine & health
34
330 - Economics
32
333 - Economics of land & energy
24
363 - Other social problems & services
19
200 - Religion
17
630 - Agriculture & related technologies
17
500 - Natural sciences & mathematics
16
380 - Commerce, communications & transportation
14
301 - Sociology & anthropology
13
340 - Law
13
530 - Physics
12
120 - Epistemology, causation & humankind
11
400 - Language
10
780 - Music
9
720 - Architecture
8
410 - Linguistics
7
576 - Genetics & evolution
7
581 - Specific topics in natural history
6
800 - Literature & rhetoric
6
658 - General management
4
160 - Logic
3
364 - Criminology
3
540 - Chemistry & allied sciences
3
551 - Geology, hydrology & meteorology
3
304 - Factors affecting social behavior
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
580 - Plants (Botany)
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
153 - Mental processes & intelligence
1
350 - Public administration & military science
1
590 - Animals (Zoology)
1
612 - Human physiology
1
791 - Public performances
1