Classification
140 - Specific philosophical schools
380 - Commerce, communications & transportation
12
700 - The arts; fine & decorative arts
10
300 - Social sciences
8
320 - Political science
7
900 - History & geography
7
600 - Technology
6
000 - Computer science, information & general works
5
100 - Philosophy & psychology
3
333 - Economics of land & energy
3
800 - Literature & rhetoric
3
340 - Law
2
370 - Education
2
410 - Linguistics
2
620 - Engineering & allied operations
2
170 - Ethics
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
330 - Economics
1
363 - Other social problems & services
1
400 - Language
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
780 - Music
1