Classification
320 - Political science
330 - Economics
363 - Other social problems & services
6
380 - Commerce, communications & transportation
600 - Technology
300 - Social sciences
5
900 - History & geography
3
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
576 - Genetics & evolution
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
340 - Law
1
370 - Education
1
650 - Management & auxiliary services
1
657 - Accounting
1
658 - General management
1