Classification
100 - Philosophy & psychology
900 - History & geography
20
320 - Political science
18
700 - The arts; fine & decorative arts
17
200 - Religion
16
140 - Specific philosophical schools
14
370 - Education
12
363 - Other social problems & services
10
300 - Social sciences
8
330 - Economics
8
800 - Literature & rhetoric
8
000 - Computer science, information & general works
7
170 - Ethics
7
301 - Sociology & anthropology
7
333 - Economics of land & energy
7
600 - Technology
7
610 - Medicine & health
6
620 - Engineering & allied operations
6
120 - Epistemology, causation & humankind
5
500 - Natural sciences & mathematics
5
581 - Specific topics in natural history
5
720 - Architecture
5
380 - Commerce, communications & transportation
3
400 - Language
3
530 - Physics
3
780 - Music
3
540 - Chemistry & allied sciences
2
576 - Genetics & evolution
2
657 - Accounting
2
160 - Logic
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
340 - Law
1
520 - Astronomy & allied sciences
1
551 - Geology, hydrology & meteorology
1
590 - Animals (Zoology)
1
791 - Public performances
1