Classification
000 - Computer science, information & general works
8
370 - Education
700 - The arts; fine & decorative arts
7
600 - Technology
6
900 - History & geography
6
363 - Other social problems & services
5
620 - Engineering & allied operations
5
380 - Commerce, communications & transportation
4
330 - Economics
3
333 - Economics of land & energy
3
340 - Law
3
320 - Political science
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
1
400 - Language
1
414 - Phonology & phonetics
1
610 - Medicine & health
1
720 - Architecture
1